title:
On Instability and Stability of Three-Dimensional Gravity Driven Viscous
  Flows in a Bounded Domain

abstract:
  We investigate the instability and stability of some steady-states of a
three-dimensional nonhomogeneous incompressible viscous flow driven by gravity
in a bounded domain $\Omega$ of class $C^2$. When the steady density is heavier
with increasing height (i.e., the Rayleigh-Taylor steady-state), we show that
the steady-state is linear unstable (i.e., the linear solution grows in time in
$H^2$) by constructing a (standard) energy functional and exploiting the
modified variational method. Then, by introducing a new energy functional and
using a careful bootstrap argument, we further show that the steady-state is
nonlinear unstable in the sense of Hadamard. When the steady density is lighter
with increasing height, we show, with the help of a restricted condition
imposed on steady density, that the steady-state is linearly globally stable
and nonlinearly locally stable in the sense of Hadamard.


title: Fermion Actions extracted from Lattice Super Yang-Mills Theories

abstract:
  We revisit 2D $\mathcal{N}=(2,2)$ super Yang-Mills lattice formulation
(Sugino model) to investigate its fermion action with two (Majorana) fermion
flavors and exact chiral-$U(1)_{R}$ symmetry. We show that the reconcilement of
chiral symmetry and absence of further species-doubling originates in the 4D
clifford algebra structure of the action, where 2D two flavors are spuriously
treated as a single 4D four-spinor with four 4D gamma matrices introduced into
kinetic and Wilson terms. This fermion construction based on the
higher-dimensional clifford algebra is extended to four dimensions in two
manners: (1) pseudo-8D sixteen-spinor treatment of 4D four flavors with eight
8D gamma matrices, (2) pseudo-6D eight-spinor treatment of 4D two flavors with
five out of six 6D gamma matrices. We obtain 4D four-species and two-species
lattice fermions with unbroken subgroup of chiral symmetry and other essential
properties. We discuss their relations to staggered and Wilson twisted-mass
fermions. We also discuss their potential feedback to 4D super Yang-Mills
lattice formulations.


title:
Deformation effects in toroidal and compression dipole excitations of
  $^{170}$Yb: Skyrme-RPA analysis

abstract:
  The effect of nuclear deformation on the isoscalar toroidal and compression
dipole modes in prolate $^{170}$Yb is studied in the framework of the
random-phase-approximation method with a representative set of Skyrme forces
(SV-bas, SLy6, SkM$^*$ and SkI3). It is shown that the deformation crucially
redistributes the strength of both modes. The compression mode has the same
sequence of $\mu$=0 and 1 branches as the isovector giant dipole resonance
where for prolate nuclei the $\mu=0$ mode is lower in energy ($\mu$ being the
projection of the axial momentum of the mode). Instead, the toroidal mode
exhibits an anomalous (opposite) sequence where the $\mu$=1 branch precedes the
$\mu$=0 one.


title: Higgs phenomenology in the Stealth Doublet Model

abstract:
  We analyze a model for the Higgs sector with two scalar doublets and a $Z_2$
symmetry that is manifest in the Yukawa sector but broken in the potential.
Thus, one of the doublets breaks the electroweak symmetry and has tree-level
Yukawa couplings to fermions, whereas the other doublet has no vacuum
expectation value and no tree-level couplings to fermions. Since the $Z_2$
parity is broken the two doublets can mix, which leads to a distinct and novel
phenomenology. This Stealth Doublet Model can be seen as a generalization of
the Inert Doublet Model with a broken $Z_2$ symmetry. We outline the model and
present constraints from theory, electroweak precision tests and collider
searches, including the recent observation of a Higgs boson at the LHC. The
charged scalar $H^\pm$ and the CP-odd scalar $A$ couple to fermions at one-loop
level. We compute the decays of $H^\pm$ and $A$ and in particular the one-loop
decays $A \to f \bar{f}$, $H^\pm \to f \bar{f}^\prime $, $H^\pm \to W^\pm Z $
and $H^\pm \to W^\pm \gamma$. We also describe how to calculate and renormalize
such processes in our model. We find that if one of $H^\pm$ or $A$ is the
lightest scalar, $H^\pm \to W^\pm \gamma$ or $ A \to b \bar{b} $ are typically
their respective dominating decay channels. Otherwise, the dominating decays of
$H^\pm$ and $A$ are into a scalar and a vector. Due to the absence of
tree-level fermion couplings for $H^\pm$ and $A$, we consider pair production
and associated production with vector bosons and scalars at the LHC. If the
parameter space of the model that favors $H^\pm \to W^\pm \gamma$ is realized
in Nature, we estimate that there could be a considerable amount of such events
in the present LHC data.


title: Time to absorption for a heterogeneous neutral competition model

abstract:
  Neutral models aspire to explain biodiversity patterns in ecosystems where
species difference can be neglected, as it might occur at a specific trophic
level, and perfect symmetry is assumed between species. Voter-like models
capture the essential ingredients of the neutral hypothesis and represent a
paradigm for other disciplines like social studies and chemical reactions. In a
system where each individual can interact with all the other members of the
community, the typical time to reach an absorbing state with a single species
scales linearly with the community size. Here we show, by using a rigorous
approach within a large deviation principle and confirming previous approximate
and numerical results, that in a heterogeneous voter model the typical time to
reach an absorbing state scales exponentially with the system size, suggestive
of an asymptotic active phase.


title: Distributed Widely Linear Complex Kalman Filtering

abstract:
  We introduce cooperative sequential state space estimation in the domain of
augmented complex statistics, whereby nodes in a network collaborate locally to
estimate noncircular complex signals. For rigour, a distributed augmented
(widely linear) complex Kalman filter (D-ACKF) suited to the generality of
complex signals is introduced, allowing for unified treatment of both proper
(rotation invariant) and improper (rotation dependent) signal distributions.
Its duality with the bivariate real-valued distributed Kalman filter, along
with several issues of implementation are also illuminated. The analysis and
simulations show that unlike existing distributed Kalman filter solutions, the
D-ACKF caters for both the improper data and the correlations between nodal
observation noises, thus providing enhanced performance in real-world
scenarios.


title:
A search for pulsations in the HgMn star HD 45975 with CoRoT photometry
  and ground-based spectroscopy

abstract:
  The existence of pulsations in HgMn stars is still being debated. To provide
the first unambiguous observational detection of pulsations in this class of
chemically peculiar objects, the bright star HD 45975 was monitored for nearly
two months by the CoRoT satellite. Independent analyses of the light curve
provides evidence of monoperiodic variations with a frequency of 0.7572 c/d and
a peak-to-peak amplitude of ~2800 ppm. Multisite, ground-based spectroscopic
observations overlapping the CoRoT observations show the star to be a
long-period, single-lined binary. Furthermore, with the notable exception of
mercury, they reveal the same periodicity as in photometry in the line moments
of chemical species exhibiting strong overabundances (e.g., Mn and Y). In
contrast, lines of other elements do not show significant variations. As found
in other HgMn stars, the pattern of variability consists in an absorption bump
moving redwards across the line profiles. We argue that the photometric and
spectroscopic changes are more consistent with an interpretation in terms of
rotational modulation of spots at the stellar surface. In this framework, the
existence of pulsations producing photometric variations above the ~50 ppm
level is unlikely in HD 45975. This provides strong constraints on the
excitation/damping of pulsation modes in this HgMn star.


title: Scaling of the Thue-Morse diffraction measure

abstract:
  We revisit the well-known and much studied Riesz product representation of
the Thue-Morse diffraction measure, which is also the maximal spectral measure
for the corresponding dynamical spectrum in the complement of the pure point
part. The known scaling relations are summarised, and some new findings are
explained.


title: Distinguishing graphs with infinite motion and nonlinear growth

abstract:
  The distinguishing number $\operatorname D(G)$ of a graph $G$ is the least
cardinal $d$ such that $G$ has a labeling with $d$ labels which is only
preserved by the trivial automorphism. We show that the distinguishing number
of infinite, locally finite, connected graphs $G$ with infinite motion and
growth $o \left(\frac{n^2}{\log_2 n} \right)$ is either $1$ or $2$, which
proves the Infinite Motion Conjecture of Tom Tucker for this type of graphs.
The same holds true for graphs with countably many ends that do not grow too
fast. We also show that graphs $G$ of arbitrary cardinality are
$2$-distinguishable if every nontrivial automorphism moves at least uncountably
many vertices $m(G)$, where $m(G) \geq
\left\vert\operatorname{Aut}(G)\right\vert$. This extends a result of Imrich et
al. to graphs with automorphism groups of arbitrary cardinality.


title: Recent progress in mathematical diffraction

abstract:
  A brief summary of recent developments in mathematical diffraction theory is
given. Particular emphasis is placed on systems with aperiodic order and
continuous spectral components. We restrict ourselves to some key results and
refer to the literature for further details.


title: Axiomatic theory for C*-algebras

abstract:
  We present an axiomatic frame (in Prt I of this book) in which many results
of the K-theory for C*-algebras are proved. Then we construct an example for
this axiomatic theory (in Part II), which generalizes the classical theory for
C*-algebras. This last theory starts by associating to each C*-algebra F the
C*-algebras of square matrices with entries in F. Every such C*-algebra of
square matrices can be obtained as the projective representation of a certain
group with respect to a complex valued Schur function (also called normalized
factor set or multiplier or two-co-cocycle in the mathematical literature) for
this group. The above mentioned generalization consist in replacing this Schur
function by an arbitrary Schur function which satisfies some axiomatic
conditions. Moreover this Schur function can take its values in a commutative
unital C*-algebra E. In this case this K-theory deos not apply to the category
of C*-algebras but to the category of E-C*-algebras, which are C*-algebras
endowed with a supplementary structure obtained by an exterior multiplication
with elements of E (every C*-algebra can be endowed with such a supplementary
structure). Up to some definitions and notation Part II is independent of Part
I.


title:
A Fractional Edwards Model for Chain Polymers -Generalizations of the
  Flory Formula

abstract: Paper is withdrawn due to further studies.


title:
Understanding Visualization: A Formal Approach using Category Theory and
  Semiotics

abstract:
  This article combines the vocabulary of semiotics and category theory to
provide a formal analysis of visualization. It shows how familiar processes of
visualization fit the semiotic frameworks of both Saussure and Peirce, and
extends these structures using the tools of category theory to provide a
general framework for understanding visualization in practice, including:
relationships between systems, data collected from those systems, renderings of
those data in the form of representations, the reading of those representations
to create visualizations, and the use of those visualizations to create
knowledge and understanding of the system under inspection. The resulting
framework is validated by demonstrating how familiar information visualization
concepts (such as literalness, sensitivity, redundancy, ambiguity,
generalizability, and chart junk) arise naturally from it and can be defined
formally and precisely. This article generalizes previous work on the formal
characterization of visualization by, inter alia, Ziemkiewicz and Kosara and
allows us to formally distinguish properties of the visualization process that
previous work does not.


title:
A new approach to time-dependent transport through an interacting
  quantum dot within Keldysh formalism

abstract:
  The time-dependent transport through a nano-scale device, consisting of a
single spin-degenerate orbital with on-site Coulomb interaction, coupled to two
leads, is investigated. Various gate and bias voltage time-dependences are
considered. The key and new point lies in the proposed way to avoid the
difficulties of the usual heavy computation when dealing with two time Green's
functions within Keldysh formalism. The time-dependent retarded dot Green's
functions are evaluated, in an efficient manner within a non-canonical Hubbard
I approximation. Calculations of the time-dependent current are then presented
in the wide-band limit for different parameter sets. A comparison between the
method and the Hartree-Fock approximation is performed as well. It is shown
that the later cannot account reliably for dynamical aspects of transport
phenomena.


title:
Spectral purity transfer between optical wavelengths at the $10^{-18}$
  level

abstract:
  Ultra-stable lasers and optical frequency combs have been the enabling
technologies for the tremendous progress of precise optical spectroscopy in the
last ten years. To improve laser frequency stabilization beyond the
thermal-noise fundamental limit of traditional room-temperature high-finesse
optical cavities, new solutions have been recently developed. These being
complex and often wavelength specific, the capability to transfer their
spectral purity to any optical wavelengths is highly desirable. Here we present
an optical frequency comb based scheme transferring a $4.5 \times 10^{-16}$
fractional frequency stability from a 1062 nm wavelength laser to a 1542 nm
laser. We demonstrate that this scheme does not hinder the transfer down to $3
\times 10^{-18}$ at one second, two orders of magnitude below previously
reported work with comparable systems. This exceeds by more than one order of
magnitude the stability of any optical oscillator demonstrated to date, and
satisfies the stability requirement for quantum-projection-noise limited
optical lattice clocks.


title: Magnetic properties of single crystalline CeMg$_{12}$

abstract:
  Single crystal of CeMg$_{12}$ is obtained by Bridgman method. CeMg$_{12}$
crystallizes in the tetragonal structure with space group $I4/mmm$ (#139). The
Laue pattern confirms the tetragonal crystal structure of CeMg$_{12}$. We have
studied the magnetic properties by measuring magnetic susceptibility,
magnetization, heat capacity and electrical transport. Specific heat
measurement shows that the compound orders at 1.2 K. We have measured the
magnetic susceptibility in the temperature range 1.8 to 300 K, and the
susceptibility data show that [100] crystallographic direction is the easy axis
of magnetization. At high temperature inverse susceptibility varies linearly
with temperature, and follows the Curie-Weiss behaviour. The effective moment
is close to the free ion value thus indicating Ce is in trivalent state in this
compound.


title: Revisited fluorine abundances in the globular cluster M22 (NGC 6656)

abstract:
  Fluorine is a fairly good tracer of formation histories of multiple stellar
populations in globular clusters as already revealed by several studies. Large
variations in fluorine abundance in red giant stars of the globular cluster M22
have been recently reported by two different groups. Futhermore, one of these
studies claims that the abundance of fluorine is anti-correlated with sodium
abundances in this cluster, leading to strong conclusions on the chemical
history of M22. To validate this important finding, we re-examine the F
abundance determinations of some of the previously studied stars. We have thus
reanalysed some high-resolution VLT/CRIRES spectra of RGB stars found in M22 in
order to re-estimate their fluorine abundance from the spectral synthesis of
the HF line at 2.336microns. Unlike what has been previously estimated, we show
that only upper limits or doubtful fluorine abundances with large uncertainties
in M22 RGB stars can be derived. This is probably caused by an incorrect
identification of continuum fluctuations as the HF signature combined with a
wrong correction of the stellar radial velocity. Such continuum fluctuations
could be the consequences of telluric residuals that are still present in the
analysed spectra. Therefore, no definitive conclusions on the chemical
pollution caused by the M22 first stellar generation can presently be drawn
from the fluorine content of this cluster.


title: Renormalized Light Front Hamiltonian in the Pauli-Villars Regularization

abstract:
  We address the problem of nonperturbative calculations on the light front in
quantum field theory regularized by Pauli-Villars method. As a preliminary step
we construct light front Hamiltonians in (2+1)-dimensional $\lambda\phi^4$
model, for the cases without and with spontaneous symmetry breaking. The
renormalization of these Hamiltonians in Pauli-Villars regularization is
carried out via comparison of all-order perturbation theory, generated by these
Hamiltonians, and the corresponding covariant perturbation theory in Lorentz
coordinates.


title: Two bijections on Tamari intervals

abstract:
  We use a recently introduced combinatorial object, the interval-poset, to
describe two bijections on intervals of the Tamari lattice. Both bijections
give a combinatorial proof of some previously known results. The first one is
an inner bijection between Tamari intervals that exchanges the initial rise and
lower contacts statistics. Those were introduced by Bousquet-M\'elou, Fusy, and
Pr\'eville-Ratelle who proved they were symmetrically distributed but had no
combinatorial explanation. The second bijection sends a Tamari interval to a
closed flow of an ordered forest. These combinatorial objects were studied by
Chapoton in the context of the Pre-Lie operad and the connection with the
Tamari order was still unclear.


title:
Kelvin-Helmholtz instability of twisted magnetic flux tubes in the solar
  wind

abstract:
  Solar wind plasma is supposed to be structured in magnetic flux tubes carried
from the solar surface. Tangential velocity discontinuity near the boundaries
of individual tubes may result in Kelvin-Helmholtz instability, which may
contribute into the solar wind turbulence. While the axial magnetic field may
stabilize the instability, a small twist in the magnetic field may allow to
sub-Alfvenic motions to be unstable. We aim to study the Kelvin-Helmholtz
instability of twisted magnetic flux tube in the solar wind with different
configurations of external magnetic field. We use magnetohydrodynamic equations
in the cylindrical geometry and derive the dispersion equations governing the
dynamics of twisted magnetic flux tube moving along its axis in the cases of
untwisted and twisted external fields. Then we solve the dispersion equations
analytically and numerically and found thresholds for Kelvin-Helmholtz
instability in both cases of external field. Both analytical and numerical
solutions show that the Kelvin-Helmholtz instability is suppressed in the
twisted tube by external axial magnetic field for sub-Alfvenic motions.
However, even small twist in the external magnetic field allows the
Kelvin-Helmholtz instability to be developed for any sub-Alfvenic motions. The
unstable harmonics correspond to vortices with high azimuthal mode numbers,
which are carried by the flow. Twisted magnetic flux tubes can be unstable to
Kelvin-Helmholtz instability when they move with small speed relative to main
solar wind stream, then the Kelvin-Helmholtz vortices may significantly
contribute into the solar wind turbulence.


title:
Acute Respiratory Distress Syndrome is a TH17-like and Treg immune
  disease

abstract:
  Acute Respiratory Distress Syndrome (ARDS) is a very severe syndrome leading
to respiratory failure and subsequent mortality. Sepsis is one of the leading
causes of ARDS. Thus, extracellular bacteria play an important role in the
pathophysiology of ARDS. Overactivated neutrophils are the major effector cells
in ARDS. Thus, extracellular bacteria triggered TH17-like innate immunity with
neutrophil activation might accounts for the etiology of ARDS. Here, microarray
analysis was employed to describe TH17-like innate immunity-related cytokine
including TGF-{\beta} and IL-6 up-regulation in whole blood of ARDS patients.
It was found that the innate TH17-related TLR1,2,4,5,8, HSP70, G-CSF, GM-CSF,
complements, defensin, PMN chemokines, cathepsins, Fc receptors, NCFs, FOS,
JunB, CEBPs, NFkB, and leukotriene B4 are all up-regulated. TGF-{\beta}
secreting Treg cells play important roles in lung fibrosis. Up-regulation of
Treg associated STAT5B and TGF-{\beta} with down-regulation of MHC genes, TCR
genes, and co-stimulation molecule CD86 are noted. Key TH17 transcription
factors, STAT3 and ROR{\alpha}, are down-regulated. Thus, the full adaptive
TH17 helper CD4 T cells may not be successfully triggered. Many fibrosis
promoting genes are also up-regulated including MMP8, MMP9, FGF13, TIMP1,
TIMP2, PLOD1, P4HB, P4HA1, PDGFC, HMMR, HS2ST1, CHSY1, and CSGALNACT. Failure
to induce successful adaptive immunity could also attribute to ARDS
pathogenesis. Thus, ARDS is actually a TH17-like and Treg immune disorder.


title: Confinement in Coulomb gauge

abstract:
  We review our lattice results concerning the Gribov-Zwanziger confinement
mechanism in Coulomb gauge. In particular, we verify the validity of Gribov's
IR divergence condition for the Coulomb ghost form factor. We also show how the
quark self-energy is, like that of the transverse gluon, IR divergent, thus
effectively extending the Gribov-Zwanziger scenario to full QCD.


title: Lattice Monte Carlo methods for systems far from equilibrium

abstract:
  We present a new numerical Monte Carlo approach to determine the scaling
behavior of lattice field theories far from equilibrium. The presented methods
are generally applicable to systems where classical-statistical fluctuations
dominate the dynamics. As an example, these methods are applied to the
random-force-driven one-dimensional Burgers' equation - a model for
hydrodynamic turbulence. For a self-similar forcing acting on all scales the
system is driven to a nonequilibrium steady state characterized by a Kolmogorov
energy spectrum. We extract correlation functions of single- and multi-point
quantities and determine their scaling spectrum displaying anomalous scaling
for high-order moments. Varying the external forcing we are able to tune the
system continuously from equilibrium, where the fluctuations are short-range
correlated, to the case where the system is strongly driven in the infrared. In
the latter case the nonequilibrium scaling of small-scale fluctuations are
shown to be universal.


title: B-spline normal multi-scale transforms for planar curves

abstract:
  Normal multi-scale transform [4] is a nonlinear multi-scale transform for
representing geometric objects that has been recently investigated [1, 7, 10].
The restrictive role of the exact order of polynomial reproduction $P_e$ of the
approximating subdivision operator $S$ in the analysis of the $S$ normal
multi-scale transform, established in [7, Theorem 2.6], significantly disfavors
the practical use of these transforms whenever $P_e\ll P$. We analyze in detail
the normal multi-scale transform for planar curves based on B-spline
subdivision scheme $S_p$ of degree $p\ge3$ and derive higher smoothness of the
normal re-parameterization than in [7]. We show that further improvements of
the smoothness factor are possible, provided the approximate normals are
cleverly chosen. Following [10], we introduce a more general framework for
those transforms where more than one subdivision operator can be used in the
prediction step, which leads to higher detail decay rates.


title:
Transfer matrix analysis of one-dimensional majority cellular automata
  with thermal noise

abstract:
  Thermal noise in a cellular automaton refers to a random perturbation to its
function which eventually leads this automaton to an equilibrium state
controlled by a temperature parameter. We study the 1-dimensional majority-3
cellular automaton under this model of noise. Without noise, each cell in this
automaton decides its next state by majority voting among itself and its left
and right neighbour cells. Transfer matrix analysis shows that the automaton
always reaches a state in which every cell is in one of its two states with
probability 1/2 and thus cannot remember even one bit of information. Numerical
experiments, however, support the possibility of reliable computation for a
long but finite time.


title: Ethical considerations in an online community: the balancing act

abstract:
  With the emergence and rapid growth of Social Media, a number of government
departments in several countries have embraced Social Media as a privilege
channel to interact with their constituency. We are exploring, in collaboration
with the Australian Department of Human Services, the possibility to exploit
the potential of social networks to support specific groups of citizens. To
this end, we have developed Next Step, an online community to help people
currently receiving welfare payments find a job and become financially
self-sufficient. In this paper, we explore some ethical issues that arise when
governments engage directly with citizens, in particular with communities in
difficult situations, and when researchers are involved. We describe some of
the challenges we faced and how we addressed them. Our work highlights the
complexity of the problem, when an online community involves a government
department and a welfare recipient group with a dependency relationship with
that department. It becomes a balancing act, with the need to ensure privacy of
the community members whilst still fulfilling the government's legal
responsibilities. While difficult, these issues must be addressed if
governments are to engage with their citizens using Social Media.


title: Randomization does not help much, comparability does

abstract:
  Following Fisher, it is widely believed that randomization "relieves the
experimenter from the anxiety of considering innumerable causes by which the
data may be disturbed." In particular, it is said to control for known and
unknown nuisance factors that may considerably challenge the validity of a
result. Looking for quantitative advice, we study a number of straightforward,
mathematically simple models. However, they all demonstrate that the optimism
with respect to randomization is wishful thinking rather than based on fact. In
small to medium-sized samples, random allocation of units to treatments
typically yields a considerable imbalance between the groups, i.e., confounding
due to randomization is the rule rather than the exception.
  In the second part of this contribution, we extend the reasoning to a number
of traditional arguments for and against randomization. This discussion is
rather non-technical, and at times even "foundational" (Frequentist vs.
Bayesian). However, its result turns out to be quite similar. While
randomization's contribution remains questionable, comparability contributes
much to a compelling conclusion. Summing up, classical experimentation based on
sound background theory and the systematic construction of exchangeable groups
seems to be advisable.


title: Colours of isolated galaxies selected from the Two-Micron All-Sky Survey

abstract:
  The properties of isolated galaxies are mainly driven by intrinsic evolution
and not by the external influence of their environments. Therefore the isolated
galaxy sample may be considered as a reference sample to study different
environmental effects. We made detailed comparisons between the near-infrared
(2MASS) and optical (SDSS) colours of the 2MASS XSC selected sample of isolated
2MIG galaxies and with other objects from the wide range of denser environments
(field, groups/clusters, triplets and pairs). We found that early type galaxies
show similar (J-H)rest and (g-r)rest colours practically in all types of
environments. Exception is for the massive early type galaxies located in
compact pairs with high velocity difference (dV~180 km/s), which are
significantly redder and brighter than isolated galaxies. We assume that these
pairs are located in the centres of more populated groups and clusters. In
general, galaxies in groups and pairs of spiral and late morphological types
have redder near-infrared colours (J-H)rest than 2MIG isolated galaxies. The
(g-r)rest colours of galaxies in groups and pairs with high velocity difference
are also significantly redder than corresponding colours of 2MIG galaxies. On
the contrary, the members of most compact pairs (dV~50 km/s, R~30 kpc) show the
same (g-r)rest colour and even tend to be bluer than 2MIG galaxies. In summary,
our results show that the colours of galaxies are strongly depend on the
external factors.


title: Structure and Kinematics of the Nearby Dwarf Galaxy UGCA 105

abstract:
  Owing to their shallow stellar potential, dwarf galaxies possess thick gas
disks, which makes them good candidates for studies of the galactic vertical
kinematical structure. We present 21 cm line observations of the isolated
nearby dwarf irregular galaxy UGCA 105, taken with the Westerbork Synthesis
Radio Telescope (WSRT), and analyse the geometry of its neutral hydrogen (HI)
disk and its kinematics. The galaxy shows a fragmented HI distribution. It is
more extended than the optical disk, and hence allows one to determine its
kinematics out to very large galacto-centric distances. The HI kinematics and
morphology are well-ordered and symmetric for an irregular galaxy. The HI is
sufficiently extended to observe a substantial amount of differential rotation.
Moreover, UGCA 105 shows strong signatures for the presence of a kinematically
anomalous gas component. Performing tilted-ring modelling by use of the
least-squares fitting routine TiRiFiC, we found that the HI disk of UGCA 105
has a moderately warped and diffuse outermost part. Probing a wide range of
parameter combinations, we succeeded in modelling the data cube as a disk with
a strong vertical gradient in rotation velocity ($\approx -60\,\rm
km\,s^{-1}\,kpc^{-1}$), as well as vertically increasing inwards motion
($\approx -70\,\rm km\,s^{-1}\,kpc^{-1}$) within the radius of the stellar
disk. The inferred radial gas inflow amounts to $0.06\,\rm M_\odot \rm
yr^{-1}$, which is similar to the star formation rate of the galaxy. The
observed kinematics are hence compatible with direct or indirect accretion from
the intergalactic medium, an extreme backflow of material that has formerly
been expelled from the disk, or a combination of both.


title:
Elucidation of charge storage characteristics of conducting polymer film
  using redox reaction

abstract:
  A general technique to investigate charge storage characteristics of
conducting polymer films has been developed. A redox reaction is conducted on a
polymer film on a rotating disk electrode under potentiostatic condition so
that the rate of charging of the film equals the rate of removal of the charge
by the reaction. In an experiment on polyaniline film deposited on platinum
substrate, using Fe2+/Fe3+ in HCl as the redox system, the voltammogram shows
five distinct linear segments (bands) with discontinuity in the slope at
specific transition potentials. These bands are the same as those indicated by
ESR/Raman spectroscopy with comparable transition potentials. From the
dependence of the slopes of the bands on concentration of ferrous and ferric
ions, it was possible to estimate the energies of the charge carrier in
different bands. It is shown that the charge storage in the film is capacitive.


title: Encoding Range Minimum Queries

abstract:
  We consider the problem of encoding range minimum queries (RMQs): given an
array A[1..n] of distinct totally ordered values, to pre-process A and create a
data structure that can answer the query RMQ(i,j), which returns the index
containing the smallest element in A[i..j], without access to the array A at
query time. We give a data structure whose space usage is 2n + o(n) bits, which
is asymptotically optimal for worst-case data, and answers RMQs in O(1)
worst-case time. This matches the previous result of Fischer and Heun [SICOMP,
2011], but is obtained in a more natural way. Furthermore, our result can
encode the RMQs of a random array A in 1.919n + o(n) bits in expectation, which
is not known to hold for Fischer and Heun's result. We then generalize our
result to the encoding range top-2 query (RT2Q) problem, which is like the
encoding RMQ problem except that the query RT2Q(i,j) returns the indices of
both the smallest and second-smallest elements of A[i..j]. We introduce a data
structure using 3.272n+o(n) bits that answers RT2Qs in constant time, and also
give lower bounds on the effective entropy} of RT2Q.


title:
Confirmative laboratory tests and one example of forensic application of
  the probabilistic approach to the area of convergence in BPA

abstract:
  One of the most important results in Bloodstain Pattern Analysis (BPA) is the
determination of the area of convergence of blood-drop trajectories. This area
is directly related to the point of origin of the projections and is often
indicative of the point where the main action of a crime has occurred. One of
us has recently proposed a method to statistically characterize this area by
mean of a probabilistic approach based on the uncertainties of the angles of
impact of the stains in the pattern. In our work we present some laboratory
tests that confirm the validity of the method, returning good agreement between
the empirical and the theoretical data. By comparing the results of different
operators, we also show the robustness of the method, in that the results are
independent of the analytical approach of the single experimenter. Finally, we
describe an example of application to a real forensic case.


title: On the dynamics of the three dimensional planetary systems

abstract:
  Over the last decades, there has been a tremendous increase in research on
extrasolar planets. Many exosolar systems, which consist of a Star and two
inclined Planets, seem to be locked in 4/3, 3/2, 2/1, 5/2, 3/1 and 4/1 mean
motion resonance (MMR). We herewith present the model used to simulate three
dimensional planetary systems and provide planar families of periodic orbits
(PO), which belong to all possible configurations that each MMR has, along with
their linear horizontal and vertical stability. We focus on depicting stable
spatial families (most of them up to mutual inclination of $60^\circ$)
generated by PO of planar circular families, because the trapping in MMR could
be a consequence of planetary migration process. We attempt to connect the
linear stability of PO with long-term stability of a planetary system close to
them. This can stimulate the search of real planetary systems in the vicinity
of stable spatial PO-counterbalanced by the planets' orbital elements, masses
and MMR; all of which could constitute a suitable environment convenient to
host them.


title: The Model of Gas-Discharge Nonneutral Electron Plasma

abstract:
  The model of gas-discharge nonneutral electron plasma has been considered, in
which the electron density is limited by non-linear processes initiated by
diocotron instability and it does not depend on the mechanism of electron
transport across the magnetic field. The model describes well the
characteristics of electron sheath and the current characteristics of discharge
both, in magnetron geometry and in the geometry of inversed magnetron, and it
allows us to describe quantitatively the influence of anode misalignment on the
discharge electron sheath for the first time. The scope of applicability of the
proposed model, as well as its relation with other models of electron sheath is
studied.


title: What will blue compact dwarf galaxies evolve into?

abstract:
  We present and analyse the photometric properties of a nearly complete sample
of blue compact dwarf (BCD) and irregular galaxies in the Virgo cluster from
multi-band SDSS images. Our study intends to shed light on the ongoing debate
of whether a structural evolution from present-day star-forming dwarf galaxies
in a cluster environment into ordinary early-type dwarf galaxies is possible
based on the structural properties.
  For this purpose, we decompose the surface brightness profiles of the BCDs
into the luminosity contribution of the starburst component and that of their
underlying low surface brightness (LSB) host. The latter dominates the stellar
mass of the BCD. We find that the LSB-components of the Virgo BCDs are
structurally compatible with the more compact half of the Virgo early-type
dwarfs, except for a few extreme BCDs. Thus, after termination of starburst
activity, the BCDs will presumably fade into galaxies that are structurally
similar to ordinary early-type dwarfs. In contrast, the irregulars are more
diffuse than the BCDs and are structurally similar to the more diffuse half of
the Virgo early-type dwarfs. Therefore, the present-day Virgo irregulars are
not simply non-starbursting BCDs.
  If starbursts in cluster BCDs are transient phenomena with a duration of ~100
Myr or less, during which the galaxies could not travel more than ~100 kpc,
then a substantial number of non-starbursting counterparts of these systems
must populate the same spatial volume, namely the Virgo cluster outskirts. The
majority of them would have to be early-type dwarfs, based on the abundance of
different galaxy types with similar colours and structural parameters to the
LSB-components of the BCDs. However, most Virgo BCDs have redder LSB-host
colours and a less prominent starburst than typical field BCDs, preventing a
robust conclusion on possible oscillations between BCDs and early-type dwarfs.


title:
Optically-Selected BLR-less Active Galactic Nuclei from the SDSS
  Stripe82 Database I: The Sample

abstract:
  This is the first paper in a dedicated series to study the properties of the
optically selected BLR-less AGNs (Active Galactic Nuclei with no-hidden central
broad emission line regions). We carried out a systematic search for the
BLR-less AGNs through the Sloan Digital Sky Survey Legacy Survey (SDSS Stripe82
Database). Based on the spectral decomposition results for all the 136676
spectroscopic objects (galaxies and QSOs) with redshift less than 0.35 covered
by the SDSS Stripe82 region, our spectroscopic sample for the BLR-less AGNs
includes 22693 pure narrow line objects without broad emission lines but with
apparent AGN continuum emission $R_{AGN}>0.3$ and apparent stellar lights
$R_{ssp}>0.3$. Then, using the properties of the photometry magnitude RMS
($RMS$) and the Pearson's coefficients ($R_{1, 2}$) between two different SDSS
band light curves: $RMS_k>3\times RMS_{M_k}$ and $R_{1, 2}>\sim0.8$, the final
281 pure narrow objects with true photometry variabilities are our selected
reliable candidates for the BLR-less AGNs. The selected candidates with higher
confidence levels not only have the expected spectral features of the BLR-less
AGNs, but also show significant true photometry variabilities. The reported
sample at least four-times enlarges the current sample of the BLR-less AGNs,
and will provide more reliable information to explain the lack of the BLRs of
AGNs in our following studies.


title:
Asymptotic description of neural networks with correlated synaptic
  weights

abstract:
  We study the asymptotic law of a network of interacting neurons when the
number of neurons becomes infinite. Given a completely connected network of
neurons in which the synaptic weights are Gaussian correlated random variables,
we describe the asymptotic law of the network when the number of neurons goes
to infinity. We introduce the process-level empirical measure of the
trajectories of the solutions to the equations of the finite network of neurons
and the averaged law (with respect to the synaptic weights) of the trajectories
of the solutions to the equations of the network of neurons. The main result of
this article is that the image law through the empirical measure satisfies a
large deviation principle with a good rate function which is shown to have a
unique global minimum. Our analysis of the rate function allows us also to
characterize the limit measure as the image of a stationary Gaussian measure
defined on a transformed set of trajectories.


title:
AGN feedback at z~2 and the mutual evolution of active and inactive
  galaxies

abstract:
  The relationships between galaxies of intermediate stellar mass and moderate
luminosity active galactic nuclei (AGNs) at 1<z<3 are investigated with the
Galaxy Mass Assembly ultra-deep Spectroscopic Survey (GMASS) sample
complemented with public data in the GOODS-South field. Using X-ray data,
hidden AGNs are identified in unsuspected star-forming galaxies with no
apparent signs of non-stellar activity. In the color-mass plane, two parallel
trends emerge during the ~2 Gyr between the average redshifts z~2.2 and z~1.3:
while the red sequence becomes significantly more populated by ellipticals, the
majority of AGNs with L(2-10 keV)>10^42.3 erg s^-1 disappear from the blue
cloud/green valley where they were hosted predominantly by star-forming systems
with disk and irregular morphologies. These results are even clearer when the
rest-frame colors are corrected for dust reddening. At z~2.2, the ultraviolet
spectra of active galaxies (including two Type 1 AGNs) show possible gas
outflows with velocities up to about -500 km s^-1 that are not observed neither
in inactive systems at the same redshift, nor at lower redshifts. Such outflows
indicate the presence of gas that can move faster than the escape velocities of
active galaxies. These results suggest that feedback from moderately luminous
AGNs (logL_X<44.5 erg s^-1) played a key role at z>~2 by contributing to
outflows capable of ejecting part of the interstellar medium and leading to a
rapid decrease in the star formation in host galaxies with stellar masses
10<logM<11 M_Sun.


title: Optimal Blowup Time for Controlled Ordinary Differential Equations

abstract:
  Both the shortest and the longest blowup time for a controlled system are
considered. Existence result and maximum principle for optimal triple are
established. Thanks to some monotonicity of the controlled system, some kinds
of "the front part local optimality" for optimal triple is established. Then
proofs of the main results become easy, clear and abundant.


title: On a family of quivers related to the Gibbons-Hermsen system

abstract:
  We introduce a family of quivers $Z_{r}$ (labeled by a natural number $r\geq
1$) and study the non-commutative symplectic geometry of the corresponding
doubles $\mathbf{Q}_{r}$. We show that the group of non-commutative
symplectomorphisms of the path algebra $\mathbb{C}\mathbf{Q}_{r}$ contains two
copies of the group $\mathrm{GL}_{r}$ over a ring of polynomials in one
indeterminate, and that a particular subgroup $\mathcal{P}_{r}$ (which contains
both of these copies) acts on the completion $\mathcal{C}_{n,r}$ of the phase
space of the $n$-particles, rank $r$ Gibbons-Hermsen integrable system and
connects each pair of points belonging to a certain dense open subset of
$\mathcal{C}_{n,r}$. This generalizes some known results for the cases $r=1$
and $r=2$.


title: Jensen-type inequality for non-convex functions

abstract:
  In this note we prove Jensen-type inequality for certain non-convex
functions. We apply our idea to prove some inequalities which were suggested at
some high-level math olympiades.


title: On the origin of preferred-basis and evolution pattern of wave function

abstract:
  The standard quantum mechanics assumes Schr\"odinger equation for regular
evolution and wave function collapse for measurement. As shown in this paper,
only particular collapse equation can continuously transition to Schr\"odinge
equation. The collapse equation also adds some restriction to the
preferred-basis. Under the assumptions that the preferred-basis depends on the
whole system Hamiltonian but is not affected by the weights of the basis
functions in the system wave function, a unique set of determination equations
of the basis functions is derived from the collapse equation. The second order
time derivative of the wave function is continuous at the end of the collapse.
To make the derivative continuous at the beginning of the collapse, it is
proved that the collapse equation has to contain a cyclic function with period
twice the duration of the collapse, which leads to conditioned alternating
Schr\"odinger evolution and collapse of equal duration.


title: The reception of relativity in the Netherlands

abstract:
  This article reviews the early academic and public reception of Albert
Einstein's theory of relativity in the Netherlands, particularly after Arthur
Eddington's eclipse experiments of 1919. Initially, not much attention was
given to relativity, as it did not seem an improvement over Hendrik A. Lorentz'
work. This changed after the arrival in Leiden of Paul Ehrenfest. Soon
relativity was much studied and lead to controversy among a number of
conservative intellectuals, as elsewhere in Europe. The tone of Dutch critics
was much more mild, however. This can be understood when one considers Dutch
neutrality during World War I. Einstein's political positions were generally
positively perceived in Holland, which Dutch academics put to use in their
efforts at international reconciliation abroad, and the presentation of
theoretical physics at home.


title:
Relative importance of social synergy, assortation and networks in the
  evolution of social cooperation

abstract:
  We compare the likelihood of different socially relevant features to allow
the evolutionary emergence and maintenance of cooperation in a generalized
variant of the iterated Prisoners Dilemma game. Results show that the average
costs/benefit balance of cooperation is the primary constraint for its
establishment and maintenance. Behavior increasing inclusive fitness such as
assortation, homophily, kin-selection and tagging of individuals, is second in
importance. Networks characteristics were the least important in favoring the
establishment and maintenance of cooperation, despite being the most popular in
recent research on the subject. Results suggest that inclusive fitness theory
with its expansions to include assortative and economic considerations is more
general, powerful and relevant in analyzing social phenomena than kin selection
theory with its emphasis on genetic relatedness. Merging economics with
evolutionary theory will be necessary to reveal more about the nature of social
dynamics.


title:
Electrostatic activation of prebiotic chemistry in substellar
  atmospheres

abstract:
  Charged dust grains in the atmospheres of exoplanets may play a key role in
the formation of prebiotic molecules, necessary to the origin of life. Dust
grains submerged in an atmospheric plasma become negatively charged and attract
a flux of ions that are accelerated from the plasma. The energy of the ions
upon reaching the grain surface may be sufficient to overcome the activation
energy of particular chemical reactions that would be unattainable via ion and
neutral bombardment from classical, thermal excitation. As a result, prebiotic
molecules or their precursors could be synthesised on the surface of dust
grains that form clouds in exoplanetary atmospheres. This paper investigates
the energization of the plasma ions, and the dependence on the plasma electron
temperature, in the atmospheres of substellar objects such as gas giant
planets. Calculations show that modest electron temperatures of $\approx 1$ eV
($\approx 10^{4}$ K) are enough to accelerate ions to sufficient energies that
exceed the activation energies required for the formation of formaldehyde,
ammonia, hydrogen cyanide and the amino acid glycine.


title:
Onset Transition to Cold Nuclear Matter from Lattice QCD with Heavy
  Quarks to $\kappa^4$

abstract:
  We present results of our ongoing studies of an effective three-dimensional
theory of thermal lattice QCD with heavy Wilson quarks. This is done by
combined strong coupling and hopping parameter expansions. The full quark
determinant of four dimensional lattice QCD is expanded in orders of the
hopping parameter $\kappa$, the dimensional reduction is achieved by
integrating over the spatial links. We present the calculation of the effective
theory through order $\kappa^nu^m$ with $n+m=4$. This theory is then used to
simulate heavy quarks near the cold and dense limit. For nonzero chemical
potential the theory suffers from a sign problem, wich is avoided by employing
stochastical quantisation. Continuum extrapolated results for the onset of
nuclear matter are shown and the region of convergence of the effective theory
is discussed.


title: Dirac Gluinos in the Pyramid Scheme

abstract:
  I point out several terms in the low energy effective Lagrangian of the
Pyramid Scheme, which were missed in a previous analysis of the
phenomenological consequences of the model. They lead to a Dirac contribution
to the gluino mass, much larger than the one loop Majorana mass. The gluino can
thus be much heavier than in previous estimates, without introducing
corresponding large loop corrections to squark masses. As pointed out by a
number of authors, this ameliorates the tension between the predictions of the
model, and LHC data. I also point out that the model has corrections to the
Higgs potential, both at the tree and loop levels, which may ameliorate fine
tuning.


title: Markovianness and Conditional Independence in Annotated Bacterial DNA

abstract:
  We explore the probabilistic structure of DNA in a number of bacterial
genomes and conclude that a form of Markovianness is present at the boundaries
between coding and non-coding regions, that is, the sequence of START and STOP
codons annotated for the bacterial genome. This sequence is shown to satisfy a
conditional independence property which allows its governing Markov chain to be
uniquely identified from the abundances of START and STOP codons. Furthermore,
the annotated sequence is shown to comply with Chargaff's second parity rule at
the codon level.


title:
Elastic and quasi-elastic electron scattering on the N = 14, 20, and 28
  isotonic chains

abstract:
  We present theoretical predictions for electron scattering on the N = 14, 20,
and 28 isotonic chains from proton-deficient to proton-rich nuclei. The
calculations are performed within the framework of the distorted-wave Born
approximation and the proton and neutron density distributions are evaluated
adopting a Relativistic Hartree-Bogoliubov (RHB) approach with a density
dependent meson-exchange interaction. We present results for the elastic and
quasi-elastic cross sections and for the parity-violating asymmetry parameter.
Owing to the correlations between the evolution of the electric charge form
factors along each chain with the underlying proton shell structure of the
isotones, elastic electron scattering experiments on isotones can provide
useful informations about the occupation and filling of the single-particle
levels of protons.


title: Gravi-Weak Unification and Multiple Point Principle

abstract:
  We construct a model unifying gravity with weak $SU(2)$ gauge and "Higgs"
scalar fields. We assume the existence of a visible and an invisible (hidden)
sector of the Universe. We used the extension of Plebanski's 4-dimensional
gravitational theory, in which the fundamental fields are two-forms containing
tetrads, spin connections and additional auxiliary fields. Considering a
$Spin(4,4)$ invariant extended Plebanski action, we recover the actions in both
(visible and invisible) sectors of the Universe. After symmetry breaking of the
graviweak (GW) unification, its physical constants (Newton's constants,
cosmological constants, YM-couplings, etc.), are determined by a parameter
$g_{uni}$ of the GW unification. It is discussed that if this "Higgs" field
coming in the GW unification could be the Higgs of the Standard Model, then the
idea that its vacuum value could be, according to the Multiple Point Principle,
a second minimum of the Higgs field effective potential, turns out not to be
viable. Then other scalar "Higgs" field, giving the inflation and axion fields,
has a Planck scale expectation value, and could have a better chance of being
the scalar field unified with gravity.


title: Observation of the Dyakonov-Tamm Wave

abstract:
  A surface electromagnetic wave called the Dyakonov-Tamm wave has been
theoretically predicted to exist at the interface of two dielectric materials
at least one of which is both anisotropic and periodically nonhomogeneous. For
experimental confirmation, a prism-coupled configuration was used to excite the
Dyakonov-Tamm wave guided by the interface of a dense thin film of magnesium
fluoride and a chiral sculptured thin film of zinc selenide. The excitation was
indicated by a reflection dip (with respect to the angle of incidence in the
prism-coupled configuration) that is independent of the polarization state of
the incident light as well as the thicknesses of both partnering materials
beyond some thresholds. Applications to optical sensing and long-range on-chip
communication are expected.


title:
Optimality conditions and regularity results for time optimal control
  problems with differential inclusions

abstract:
  We study the time optimal control problem with a general target $\mathcal S$
for a class of differential inclusions that satisfy mild smoothness and
controllability assumptions. In particular, we do not require Petrov's
condition at the boundary of $\mathcal S$. Consequently, the minimum time
function $T(\cdot)$ fails to be locally Lipschitz---never mind
semiconcave---near $\mathcal S$. Instead of such a regularity, we use an
exterior sphere condition for the hypograph of $T(\cdot)$ to develop the
analysis. In this way, we obtain dual arc inclusions which we apply to show the
constancy of the Hamiltonian along optimal trajectories and other optimality
conditions in Hamiltonian form. We also prove an upper bound for the Hausdorff
measure of the set of all nonlipschitz points of $T(\cdot)$ which implies that
the minimum time function is of special bounded variation.


title:
Holographic superconductors in Born-Infeld electrodynamics and external
  magnetic field

abstract:
  In this paper, we analytically investigate the effect of adding an external
magnetic field in presence of Born-Infeld corrections to a holographic
superconductor in the probe limit. The technique employed is based on the
matching of the solutions to the field equations near the horizon and the
asymptotic AdS region. We obtain expressions for the critical temperature and
the condensation values explicitly to all orders in the Born-Infeld parameter.
The value of the critical magnetic field is finally obtained and is found to
get affected by the Born-Infeld parameter.


title: Higgsing Gauge Symmetries with Reduced Staggered Fermions

abstract:
  We show how a strongly coupled lattice theory consisting of just fermions and
gauge fields can exhibit a dynamical Higgs mechanism through the formation of a
gauge invariant four fermion condensate. Furthermore, we argue that the
resultant lattice Higgs phase may survive into the continuum limit.


title: Boundary State in an Integrable Quantum Field Theory Out of Equilibrium

abstract:
  We study a quantum quench of the mass and the interaction in the Sinh-Gordon
model starting from a large initial mass and zero initial coupling. Our focus
is on the determination of the expansion of the initial state in terms of
post-quench excitations. We argue that the large energy profile of the involved
excitations can be relevant for the late time behaviour of the system and
common regularization schemes are unreliable. We therefore proceed in
determining the initial state by first principles expanding it in a systematic
and controllable fashion on the basis of the asymptotic states. Our results
show that, for the special limit of pre-quench parameters we consider, it
assumes a squeezed state form that has been shown to evolve so as to exhibit
the equilibrium behaviour predicted by the Generalized Gibbs Ensemble.


title: Perception and Steering Control in Paired Bat Flight

abstract:
  Animals within groups need to coordinate their reactions to perceived
environmental features and to each other in order to safely move from one point
to another. This paper extends our previously published work on the flight
patterns of Myotis velifer that have been observed in a habitat near Johnson
City, Texas. Each evening, these bats emerge from a cave in sequences of small
groups that typically contain no more than three or four individuals, and they
thus provide ideal subjects for studying leader-follower behaviors. By
analyzing the flight paths of a group of M. velifer, the data show that the
flight behavior of a follower bat is influenced by the flight behavior of a
leader bat in a way that is not well explained by existing pursuit laws, such
as classical pursuit, constant bearing and motion camouflage. Thus we propose
an alternative steering law based on virtual loom, a concept we introduce to
capture the geometrical configuration of the leader-follower pair. It is shown
that this law may be integrated with our previously proposed vision-enabled
steering laws to synthesize trajectories, the statistics of which fit with
those of the bats in our data set. The results suggest that bats use perceived
information of both the environment and their neighbors for navigation.


title:
CAVDM: Cellular Automata Based Video Cloud Mining Framework for
  Information Retrieval

abstract:
  Cloud Mining technique can be applied to various documents. Acquisition and
storage of video data is an easy task but retrieval of information from video
data is a challenging task. So video Cloud Mining plays an important role in
efficient video data management for information retrieval. This paper proposes
a Cellular Automata based framework for video Cloud Mining to extract the
information from video data. This includes developing the technique for shot
detection then key frame analysis is considered to compare the frames of each
shot to each others to define the relationship between shots. Cellular automata
based hierarchical clustering technique is adopted to make a group of similar
shots to detect the particular event on some requirement as per user demand.


title:
Charge Exchange and Energy Loss of Slow Highly Charged Ions in 1nm Thick
  Carbon Nanomembranes

abstract:
  Experimental charge exchange and energy loss data for the transmission of
slow highly charged Xe ions through ultra-thin polymeric carbon membranes are
presented. Surprisingly, two distinct exit charge state distributions
accompanied by charge exchange dependent energy losses are observed. The energy
loss for ions exhibiting large charge loss shows a quadratic dependency on the
incident charge state indicating that equilibrium stopping force values do not
apply in this case. Additional angle resolved transmission measurements point
on a significant contribution of elastic energy loss. The observations show
that regimes of different impact parameters can be separated and thus a
particle's energy deposition in an ultra-thin solid target may not be described
in terms of an averaged energy loss per unit length.


title: Incorporation of a dc bias in a high-Q 3d microwave cavity

abstract:
  We report a technique for applying a dc bias in a 3d microwave cavity. This
is achieved by isolating the two halves of the cavity with a dielectric and
directly using them as dc electrodes. By embedding a variable capacitance diode
in the cavity, we tune the resonant frequency with a dc voltage at room
temperature, demonstrating the introduction of a dc bias into the 3d cavity
without compromising its high quality factor.


title: Final A&T Stages of the Gemini Planet Finder

abstract:
  The Gemini Planet Imager (GPI) is currently in its final Acceptance & Testing
stages. GPI is an XAO system based on a tweeter & woofer architecture (43 & 9
actuators respectively across the pupil), with the tweeter being a Boston
Michromachines $64^2$ MEMS device. The XAO AO system is tightly integrated with
a Lyot apodizing coronagraph. Acceptance testing started in February 2013 at
the University of California, Santa Cruz. A conclusive acceptance review was
held in July 2013 and the instrument was found ready for shipment to the Gemini
South telescope on Cerro Pachon, Chile. Commissioning at the telescope will
take place by the end of 2013, matching the summer window of the southern
hemisphere. According to current estimates the 3 year planet finding campaign
(890 allocated hours) might discover, image, and spectroscopically analyze 20
to 40 new exo-planets. Final acceptance testing of the integrated instrument
can always bring up surprises when using cold chamber and flexure rig
installations. The latest developments are reported. Also, we will give an
overview of GPI's lab performance, the interplay between subsystems such as the
calibration unit (CAL) with the AO bench. We report on-going optimizations on
the AO controller loop to filter vibrations and last but not least achieved
contrast performance applying speckle nulling. Furthermore, we will give an
outlook of possible but challenging future upgrades as the implementation of a
predictive controller or exchanging the conventional 48x48 SH WFS with a
pyramid. With the ELT era arising, GPI will proof as a versatile and
path-finding testbed for AO technologies on the next generation of ground-based
telescopes.


title: First order thermal phase transition with 126 GeV Higgs mass

abstract:
  We study the strength of the electroweak phase transition in models with two
light Higgs doublets and a light SU(3)_c triplet by means of lattice
simulations in a dimensionally reduced effective theory. In the parameter
region considered the transition on the lattice is significantly stronger than
indicated by a 2-loop perturbative analysis. Within some ultraviolet
uncertainties, the finding applies to MSSM with a Higgs mass m_h approximately
126 GeV and shows that the parameter region useful for electroweak baryogenesis
is enlarged. In particular (even though only dedicated analyses can quantify
the issue), the tension between LHC constraints after the 7 TeV and 8 TeV runs
and frameworks where the electroweak phase transition is driven by light stops,
seems to be relaxed.


title: Parameterized Model Checking of Token-Passing Systems

abstract:
  We revisit the parameterized model checking problem for token-passing systems
and specifications in indexed $\textsf{CTL}^\ast \backslash \textsf{X}$.
Emerson and Namjoshi (1995, 2003) have shown that parameterized model checking
of indexed $\textsf{CTL}^\ast \backslash \textsf{X}$ in uni-directional token
rings can be reduced to checking rings up to some \emph{cutoff} size. Clarke et
al. (2004) have shown a similar result for general topologies and indexed
$\textsf{LTL} \backslash \textsf{X}$, provided processes cannot choose the
directions for sending or receiving the token.
  We unify and substantially extend these results by systematically exploring
fragments of indexed $\textsf{CTL}^\ast \backslash \textsf{X}$ with respect to
general topologies. For each fragment we establish whether a cutoff exists, and
for some concrete topologies, such as rings, cliques and stars, we infer small
cutoffs. Finally, we show that the problem becomes undecidable, and thus no
cutoffs exist, if processes are allowed to choose the directions in which they
send or from which they receive the token.


title: The role of anisotropy in dipolar bosons in triple-well potentials

abstract:
  Mesoscopic samples of polarized dipolar atoms confined in three spatially
separated traps conform an extended Bose-Hubbard Hamiltonian in which different
quantum phases appear depending on the competition between tunneling, on-site
and long range inter-site dipole-dipole interactions. Here, by choosing an
appropriate configuration of triple-wells, we analyze the role played by the
anisotropic character inherent to the dipolar interaction in the phase diagram
of the system. We further characterize the different phases as well as their
boundaries by means of their entanglement properties.


title: N and $\Delta$ hidden-charm resonances with heavy-quark spin symmetry

abstract:
  We study N and $\Delta$ hidden-charm baryon resonances that are generated
dynamically from the s-wave interaction of pseudoscalar and vector mesons with
$1/2^+$ and $3/2^+$ baryons. We use a unitary coupled-channels model that
fulfills heavy-quark spin symmetry and respects spin-flavor symmetry in the
light sector. We predict seven N-like and five $\Delta$-like states with masses
around 4 GeV, most of them as bound states. Some of these states form
heavy-quark spin multiplets, which are almost degenerate in mass.


title:
D\'evissage of a Poisson boundary under equivariance and regularity
  conditions

abstract:
  We present a method that allows, under suitable equivariance and regularity
conditions, to determine the Poisson boundary of a diffusion starting from the
Poisson boundary of a sub-diffusion of the original one. We then give two
examples of application of this d\'evissage method. Namely, we first recover
the classical result that the Poisson boundary of Brownian motion on a
rotationally symmetric manifolds is generated by its escape angle, and we then
give an "elementary" probabilistic proof of the delicate result of [Bai08],
i.e. the determination of the Poisson boundary of the relativistic Brownian
motion in Minkowski space-time.


title: Geometric characterization of $L_1$-spaces

abstract:
  The paper is devoted to a description of all strongly facially symmetric
spaces which are isometrically isomorphic to $L_1$-spaces. We prove that if $Z$
is a real neutral strongly facially symmetric space such that every maximal
geometric tripotent from the dual space of $Z$ is unitary then, the space $Z$
is isometrically isomorphic to the space $L_1(\Omega, \Sigma, \mu),$ where
$(\Omega, \Sigma, \mu)$ is an appropriate measure space having the direct sum
property.


title: Fundamental aspects of steady state heat to work conversion

abstract:
  We review theoretical approaches to analyzing efficiency of steady state heat
to work conversion which is crucial in the timely problem of optimizing
efficiency of small-scale heat engines and refrigerators. A rather abstract
perspective of non-equilibrium statistical mechanics and dynamical system's
theory is taken to view at this very practical problem. Several recently
discovered general mechanisms of optimizing the figure of merit of
thermoelectric efficiency are discussed, also in connection to breaking
time-reversal symmetry of the microscopic equations of motion. Applications of
these theoretical and mathematical ideas to practically relevant models are
pointed out.


title:
Mathematical Foundations for Information Theory in Diffusion-Based
  Molecular Communications

abstract:
  Molecular communication emerges as a promising communication paradigm for
nanotechnology. However, solid mathematical foundations for
information-theoretic analysis of molecular communication have not yet been
built. In particular, no one has ever proven that the channel coding theorem
applies for molecular communication, and no relationship between information
rate capacity (maximum mutual information) and code rate capacity (supremum
achievable code rate) has been established. In this paper, we focus on a major
subclass of molecular communication - the diffusion-based molecular
communication. We provide solid mathematical foundations for information theory
in diffusion-based molecular communication by creating a general
diffusion-based molecular channel model in measure-theoretic form and prove its
channel coding theorems. Various equivalence relationships between statistical
and operational definitions of channel capacity are also established, including
the most classic information rate capacity and code rate capacity. As
byproducts, we have shown that the diffusion-based molecular channel is with
"asymptotically decreasing input memory and anticipation" and "d-continuous".
Other properties of diffusion-based molecular channel such as stationarity or
ergodicity are also proven.


title:
On the Stable Numerical Approximation of Two-Phase Flow with Insoluble
  Surfactant

abstract:
  We present a parametric finite element approximation of two-phase flow with
insoluble surfactant. This free boundary problem is given by the Navier--Stokes
equations for the two-phase flow in the bulk, which are coupled to the
transport equation for the insoluble surfactant on the interface that separates
the two phases. We combine the evolving surface finite element method with an
approach previously introduced by the authors for two-phase Navier--Stokes
flow, which maintains good mesh properties. The derived finite element
approximation of two-phase flow with insoluble surfactant can be shown to be
stable. Several numerical simulations demonstrate the practicality of our
numerical method.


title:
Source identities and kernel functions for deformed (quantum)
  Ruijsenaars models

abstract:
  We consider the relativistic generalization of the quantum $A_{N-1}$
Calogero-Sutherland models due to Ruijsenaars, comprising the rational,
hyperbolic, trigonometric and elliptic cases. For each of these cases, we find
an exact common eigenfunction for a generalization of Ruijsenaars analytic
difference operators that gives, as special cases, many different kernel
functions; in particular, we find kernel functions for Chalykh-
Feigin-Veselov-Sergeev-type deformations of such difference operators which
generalize known kernel functions for the Ruijsenaars models. We also discuss
possible applications of our results.


title: Chiral Structure of Scalar and Pseudoscalar Mesons

abstract:
  We systematically study the chiral structure of local tetraquark currents of
flavor singlet and J(P)=0(+). We also investigate their chiral partners,
including scalar and pseudoscalar tetraquark currents of flavor singlet, octet,
10, 10_bar and 27. We study their chiral transformation properties.
Particularly, we use the tetraquark currents belonging to the "non-exotic"
[(3_bar,3)+(3,3_bar)] chiral multiplets to calculate the masses of light scalar
mesons through QCD sum rule. The two-point correlation functions are calculated
including all terms and only the connected parts. The results are consistent
with the experimental values.


title:
Geometrically induced phase transitions in two-dimensional
  dumbbell-shaped domains

abstract:
  We continue the analysis, started in Morini&Slastikov (2012), of a
two-dimensional non-convex variational problem, motivated by studies on
magnetic domain walls trapped by thin necks. The main focus is on the impact of
extreme geometry on the structure of local minimizers representing the
transition between two different constant phases. We address here the case of
general non-symmetric dumbbell-shaped domains with a small constriction and
general multi-well potentials. Our main results concern the existence and
uniqueness of non-constant local minimizers, their full classification in the
case of convex bulks, and the complete description of their asymptotic
behavior, as the size of the constriction tends to zero.


title:
ynogkm: A New Public Code For Calculating time-like Geodesics In The
  Kerr-Newmann Spacetime

abstract:
  In this paper we present a new public code, named $ynogkm$, for the fast
calculation of time-like geodesics in the Kerr-Newmann (K-N) spacetime, which
is a direct extension of $ynogk$ calculating null geodesics in a Kerr
spacetime. Following the strategies used in $ynogk$, we also solve the
equations of motion analytically and semi-analytically by using Weierstrass'
and Jacobi's elliptic functions and integrals, in which the Boyer-Lidquist
(B-L) coordinates $r$, $\theta$, $\phi$, $t$ and the proper time $\sigma$ are
expressed as functions of an independent variable $p$ (Mino time). All of the
elliptic integrals are computed by Carlson's elliptic integral method, which
guarantees the fast speed of the code. Finally the code is applied to a couple
of toy problems.


title:
Complexity and instability of quantum motion near a quantum phase
  transition

abstract:
  We show that the number of harmonics of the Wigner function, recently
proposed as a measure of quantum complexity, can be also used to characterize
quantum phase transitions. The non-analytic behavior of this quantity in the
neighborhood of a quantum phase transition is illustrated by means of the Dicke
model and is compared to two well-known measures of the (in)stability of
quantum motion, the quantum Loschmidt echo and the fidelity.


title: Frobenius nonclassical components of curves with separated variables

abstract:
  We establish a relation between minimal value set polynomials defined over
$\mathbb{F}_q$ and certain $q$-Frobenius nonclassical curves. The connection
leads to a characterization of the curves of type $g(y)=f(x)$, whose
irreducible components are $q$-Frobenius nonclassical. An immediate consequence
will be the realization of rich sources of new $q$-Frobenius nonclassical
curves.


title:
60 GHz Wireless Link Within Metal Enclosures: Channel Measurements and
  System Analysis

abstract:
  Wireless channel measurement results for 60 GHz within a closed metal cabinet
are provided. A metal cabinet is chosen to emulate the environment within a
mechatronic system, which have metal enclosures in general. A frequency domain
sounding technique is used to measure the wireless channel for different
volumes of the metal enclosure, considering both line-of-sight (LOS) and
non-line-of-sight (NLOS) scenarios. Large-scale and small-scale characteristics
of the wireless channel are extracted in order to build a comprehensive channel
model. In contrast to conventional indoor channels at 60 GHz, the channel in
the metal enclosure is highly reflective resulting in a rich scattering
environment with a significantly large root-mean-square (RMS) delay spread.
Based on the obtained measurement results, the bit error rate (BER) performance
is evaluated for a wideband orthogonal frequency division multiplexing (OFDM)
system.


title:
Complex $\varphi^4$ Theory at Finite Temperature and Density via
  Extended Mean Field Theory

abstract:
  We review the Extended Mean Field (EMFT) approximation and apply it to
complex, scalar $\varphi^4$ theory on the lattice. We determine the ($T,\mu$)
phase diagram and study the critical properties of the Bose condensation
transition, at zero and finite temperature. In both cases we obtain results
which agree very well with recent Monte Carlo studies. Within our approximation
we can reach the thermodynamic limit and can thus obtain results at lattice
spacings unreachable by present Monte Carlo simulations. We find that our
approximation reproduces accurately many phenomena of the model, like the
"Silver Blaze" behavior at zero temperature and dimensional reduction at finite
temperature.


title: Types of Gaseous Envelopes of "Hot Jupiter" Exoplanets

abstract:
  As a rule, the orbital velocities of "hot Jupiters," i.e., exoplanets with
masses comparable to the mass of Jupiter and orbital semi-major axes less than
0.1 AU, are supersonic relative to the stellar wind, resulting in the formation
of a bow shock. Gas-dynamical modeling shows that the gaseous envelopes around
"hot Jupiters" can belong to two classes, depending on the position of the
collision point. if the collision point is inside the Roche lobe of the planet,
the envelopes have the almost spherical shapes of classical atmospheres,
slightly distorted by the influence of the star and interactions with the
stellar-wind gas; if the collision point is located outside the Roche lobe,
outflows from the vicinity of the Lagrangian points $\mathrm L_1$ and $\mathrm
L_2$ arise, and the envelope becomes substantially asymmetrical. The latter
class of objects can also be divided into two types. If the dynamical pressure
of the stellar-wind gas is high enough to stop the most powerful outflow from
the vicinity of the inner Lagrangian point $\mathrm L_1$, a closed
quasi-spherical envelope with a complex shape forms in the system. If the wind
is unable to stop the outflow from $\mathrm L_1$, an open aspherical envelope
forms. The possible existence of atmospheres of these three types is confirmed
by 3D numerical modeling. Using the typical "hot Jupiter" HD 209458b as an
example, it is shown that all three types of atmospheres could exist within the
range of estimated parameters of this planet. Since different types of
envelopes have different observational manifestations, determining the type of
envelope in HD 209458b could apply additional constrains on the parameters of
this exoplanet.


title:
On a new formulas for a direct and inverse Cauchy problems of heat
  equation

abstract:
  In this paper a solution of the direct Cauchy problems for heat equation is
founded in the Hermite polynomial series form. A well-known classical solution
of direct problem is represented in the Poisson integral form. The author shows
the formulas for the solution of the inverse Cauchy problems have a symmetry
with respect to the formulas for the corresponding direct problems. The
obtained solution formulas for the inverse problems can serve as a basis for
regularizing computational algorithms while well-known classical formula for
the solution of inverse problem did not possess such properties and can't be a
basis for regularizing computational algorithms.


title: Mergers of binary neutron stars with realistic spin

abstract:
  Simulations of binary neutron stars have seen great advances in terms of
physical detail and numerical quality. However, the spin of the neutron stars,
one of the simplest global parameters of binaries, remains mostly unstudied. We
present the first, fully nonlinear general relativistic dynamical evolutions of
the last three orbits for constraint satisfying initial data of spinning
neutron star binaries, with astrophysically realistic spins aligned and
anti-aligned to the orbital angular momentum. The initial data is computed with
the constant rotational velocity approach. The dynamics of the systems is
analyzed in terms of gauge-invariant binding energy vs. orbital angular
momentum curves. By comparing to a binary black hole configuration we can
estimate the different tidal and spin contributions to the binding energy for
the first time. First results on the gravitational wave forms are presented.
The phase evolution during the orbital motion is significantly affected by
spin-orbit interactions, leading to delayed or early mergers. Furthermore, a
frequency shift in the main emission mode of the hyper massive neutron star is
observed. Our results suggest that a detailed modeling of merger waveforms
requires the inclusion of spin, even for the moderate magnitudes observed in
binary neutron star systems.


title:
Novel Phenomena in Particle Correlations in Relativistic Heavy-Ion
  Collisions

abstract:
  The novel phenomena observed in particle angular correlations are reviewed.
They include the double-peak away-side azimuthal correlations in relativistic
heavy-ion collisions and the long-range pseudorapidity near-side (ridge)
correlations in heavy-ion as well as in proton-induced collisions. The
collision system and energy dependence of these phenomena are examined,
wherever possible and most abundantly for the ridge correlations. Their
possible theoretical interpretations and what might be learned about the
properties of the collision systems from theoretical comparisons are discussed.
Prospective future measurements and theoretical undertakings are outlined that
might help further the understanding of the physics mechanisms underlying these
phenomena.


title: Scalar leptoquarks and Higgs pair production at the LHC

abstract:
  The presence of colored particles can affect both the single and the pair
Higgs productions substantially. For scalar particles, this happens if their
portal couplings to the Standard Model Higgs are large and their masses are not
too high. In the present work these processes are studied in the case of
several leptoquarks which may appear in many beyond Standard Model theories. It
is found that the constraints on the portal couplings from the single Higgs
production and the decays to various channels measured by the LHC experiments
still allow increased Higgs pair production rate. For the masses in the range
from 180 GeV to 300 GeV, depending on the strength of such portal couplings,
the Higgs pair production may reach an order to several hundred in magnitude
larger rate than the Standard Model case for the 8 TeV run. Therefore, combined
with the on going searches for leptoquarks by both the CMS and ATLAS, this is
one of the possible scenarios to be probed directly by the current data. The
current study demonstrates that if colored scalars modify scalar potentials
through portal couplings, which has been studied for variety of motivations
such as playing a potentially important role in electroweak phase transition,
composite models or radiative neutrino masses, this fact may appear as the
modified Higgs pair production.


title: Leading-order hadronic contributions to $g_\mu-2$

abstract:
  We present preliminary lattice results for the leading-order hadronic
contribution to the muon anomalous magnetic moment, calculated with HEX-smeared
clover fermions. In our calculation we include 2+1-flavor ensembles with pions
at the physical mass.


title:
A Balanced $_{10}F_{9}$ Hypergeometric Hybrid Hilbert-Schmidt/Bures
  Two-Qubit Function and Related Constructions

abstract:
  We seek to develop a Bures (minimal monotone/statistical distinguishability)
metric-based series of formulas for the moments of probability distributions
over the determinants $|\rho|$ and $|\rho^{PT}|$ of $4 \times 4$ density
matrices, $\rho$, for generalized (rebit, quater[nionic]bit,\ldots) two-qubit
systems, analogous to a series that has been obtained for the Hilbert-Schmidt
(HS) metric. In particular, we desire--using moment-inversion procedures--to be
able to closely test the previously-developed conjecture (J. Geom. Phys., 53,
74 [2005]) that the Bures separability probability over the (standard,
fifteen-dimensional convex set of) two-qubit states is $\frac{1680
\left(\sqrt{2}-1\right)}{\pi ^8} \approx 0.0733389$--while, in the HS context,
strong evidence has been adduced, along the indicated analytical lines, that
the counterpart of this value is $\frac{8}{33}$ (J. Phys. A}, 45, 095305
[2012]). Working within the "utility function" framework of Dunkl employed in
that latter study, we obtain an interesting $_{10}F_{9}$ balanced
hypergeometric function based on a "hybridization" of known Bures and HS terms.
This exercise appears to provide an upper bound on the Bures two-qubit
separability probability of 0.0798218. We also examine the yet unresolved HS
qubit-qutrit scenario. Mathematica calculations indicate that if the same form
of hypergeometric paradigm as has been established for the generalized
two-qubit HS moments is followed in either the HS qubit-qutrit or Bures
two-qubit cases, then a balanced hypergeometric function $_{p}F_{p-1}$ with
$p>9$ would be required.


title: Most Complex Regular Right-Ideal Languages

abstract:
  A right ideal is a language L over an alphabet A that satisfies L = LA*. We
show that there exists a stream (sequence) (R_n : n \ge 3) of regular right
ideal languages, where R_n has n left quotients and is most complex under the
following measures of complexity: the state complexities of the left quotients,
the number of atoms (intersections of complemented and uncomplemented left
quotients), the state complexities of the atoms, the size of the syntactic
semigroup, the state complexities of the operations of reversal, star, and
product, and the state complexities of all binary boolean operations. In that
sense, this stream of right ideals is a universal witness.


title:
Discovery of the Third Transient X-ray Binary in the Galactic Globular
  Cluster Terzan 5

abstract:
  We report and study the outburst of a new transient X-ray binary (XRB) in
Terzan 5, the third detected in this globular cluster, Swift J174805.3-244637
or Terzan 5 X-3. We find clear spectral hardening in Swift/XRT data during the
outburst rise to the hard state, thanks to our early coverage (starting at L_X
~ 4x10^{34} ergs/s) of the outburst. This hardening appears to be due to the
decline in relative strength of a soft thermal component from the surface of
the neutron star (NS) during the rise. We identify a {Type I X-ray burst} in
Swift/XRT data with a long (16 s) decay time, indicative of {hydrogen burning
on the surface of the} NS. We use Swift/BAT, Maxi/GSC, Chandra/ACIS, and
Swift/XRT data to study the spectral changes during the outburst, identifying a
clear hard-to-soft state transition. We use a Chandra/ACIS observation during
outburst to identify the transient's position. Seven archival Chandra/ACIS
observations show evidence for variations in Terzan 5 X-3's non-thermal
component, but not the thermal component, during quiescence. The inferred
long-term time-averaged mass accretion rate, from the quiescent thermal
luminosity, suggests that if this outburst is typical and only slow cooling
processes are active in the neutron star core, such outbursts should recur
every ~10 years.


title: Counting subgraphs in hyperbolic graphs with symmetry

abstract:
  This note addresses some questions that arise in the series of works by Kyoji
Saito on the growth functions of graphs. We study "hyperbolike" graphs, which
include Cayley graphs of hyperbolic groups. We generalize some well-known
results on hyperbolic groups to the hyperbolike setting, including rationality
of generating functions, and sharp estimates on the growth rate of vertices. We
then apply these results to confirm a conjecture of Saito on the "opposite
series", which was originally posed for hyperbolic groups.


title:
#BIS-Hardness for 2-Spin Systems on Bipartite Bounded Degree Graphs in
  the Tree Nonuniqueness Region

abstract:
  Counting independent sets on bipartite graphs (#BIS) is considered a
canonical counting problem of intermediate approximation complexity. It is
conjectured that #BIS neither has an FPRAS nor is as hard as #SAT to
approximate. We study #BIS in the general framework of two-state spin systems
on bipartite graphs. We define two notions, nearly-independent phase-correlated
spins and unary symmetry breaking. We prove that it is #BIS-hard to approximate
the partition function of any 2-spin system on bipartite graphs supporting
these two notions. As a consequence, we classify the complexity of
approximating the partition function of antiferromagnetic 2-spin systems on
bounded-degree bipartite graphs.


title: Some Properties of a Class of QM Phase Space Measures

abstract:
  We have a look at the probability measures induced by Schrodinger wave
functions on phase space.


title: Vector-like Bottom Quarks in Composite Higgs Models

abstract:
  Like many other models, Composite Higgs Models feature the existence of heavy
vector-like quarks. Mixing effects between the Standard Model fields and the
heavy states, which can be quite large in case of the top quark, imply
deviations from the SM. In this work we investigate the possibility of heavy
bottom partners. We show that they can have a significant impact on electroweak
precision observables and the current Higgs results if there is a sizeable
mixing with the bottom quark. We explicitly check that the constraints from the
measurement of the CKM matrix element $V_{tb}$ are fulfilled, and we test the
compatibility with the electroweak precision observables. In particular we
evaluate the constraint from the $Z$ coupling to left-handed bottom quarks.
General formulae have been derived which include the effects of new bottom
partners in the loop corrections to this coupling and which can be applied to
other models with similar particle content. Furthermore, the constraints from
direct searches for heavy states at the LHC and from the Higgs search results
have been included in our analysis. The best agreement with all the considered
constraints is achieved for medium to large compositeness of the left-handed
top and bottom quarks.


title: Baryonic sphere: a spherical domain wall carrying baryon number

abstract:
  We construct a spherical domain wall which has baryon charge distributed on a
sphere of finite radius in a Skyrme model with a sixth order derivative term
and a modified mass term. Its distribution of energy density likewise takes the
form of a sphere. In order to localize the domain wall at a finite radius we
need a negative coefficient in front of the Skyrme term and a positive
coefficient of the sixth order derivative term to stabilize the soliton.
Increasing the pion mass pronounces the shell-like structure of the
configuration.


title: Coupled-channel continuum eigenchannel basis

abstract:
  The goal of this paper is to calculate bound, resonant and scattering states
in the coupled-channel formalism without relying on the boundary conditions at
large distances. The coupled-channel solution is expanded in eigenchannel bases
i.e. in eigenfunctions of diagonal Hamiltonians. Each eigenchannel basis may
include discrete and discretized continuum (real or complex energy) single
particle states. The coupled-channel solutions are computed through
diagonalization in these bases. The method is applied to a few two-channels
problems. The exact bound spectrum of the Poeschl-Teller potential is well
described by using a basis of real energy continuum states. For deuteron
described by Reid potential, the experimental energy and the S and D contents
of the wave function are reproduced in the asymptotic limit of the cutoff
energy. For the Noro-Taylor potential resonant state energy is well reproduced
by using the complex energy Berggren basis. It is found that the expansion of
the coupled-channel wave function in these eigenchannel bases require less
computational efforts than the use of any other basis. The solutions are stable
and converge as the cutoff energy increases.


title: The quarkonium saga in heavy ion collisions

abstract:
  J/psi suppression was proposed more than 25 years ago as an unambiguous
signature for the formation of the Quark Gluon Plasma in relativistic heavy ion
collisions. After intensive efforts, both experimental and theoretical, the
quarkonium saga remains exciting, producing surprising results and not fully
understood. This talk focuses on recent results on quarkonium production at
RHIC and the LHC.


title:
Conditions for Sustained Orbital Resonances in Extreme Mass Ratio
  Inspirals

abstract:
  We investigate the possibility of sustained orbital resonances in extreme
mass ratio inspirals. Using a near-identity averaging transformation, we reduce
the equations of motion for a particle moving in Kerr spacetime with self-force
corrections in the neighbourhood of a resonant geodesic to a one dimensional
equation for a particle moving in an effective potential. From this effective
equation we obtain the necessary and sufficient conditions that the self-force
needs to satisfy to allow inspiralling orbits to be captured in sustained
resonance. Along the way we also obtain the full non-linear expression for the
jump in the adiabatic constants of motion incurred as an inspiral transiently
evolves through a strong resonance to first-order in the mass ratio. Finally,
we find that if the resonance is strong enough to allow capture in sustained
resonance, only a small fraction (order of the square root of mass-ratio) of
all inspirals will indeed be captured. This makes observation of sustained
resonances in EMRIs -- if they exist -- very unlikely for space based
observatories like eLisa.


title:
Anomalous dimensions of four-fermion operators from conformal EWSB
  dynamics

abstract:
  (Quasi)conformal scaling of composite operators from a strongly coupled EWSB
dynamics helps to produce the characteristic hierarchies exhibited by the
flavour couplings of the SM. It is however crucial to ensure that specific
models satisfy bounds on Higgs and flavour dynamics; this in turn requires to
control not only the anomalous dimensions of bilinears, but also those of
higher-dimensional operators. We report on an ongoing effort to determine
four-fermion operator anomalous dimensions, via Schr\"odinger Functional
techniques, in the benchmark scenario of Minimal Walking Technicolour.


title: The Exact Wavefunction Factorization of a Vibronic Coupling System

abstract:
  We investigate the exact wavefunction as a single product of electronic and
nuclear wavefunction for a model conical intersection system. Exact factorized
spiky potentials and nodeless nuclear wavefunctions are found. The exact
factorized potential preserves the symmetry breaking effect when the coupling
mode is present. Additionally the nodeless wavefunctions are found to be
closely related to the adiabatic nuclear eigenfunctions. This phenomenon holds
even for the regime where the non-adiabatic coupling is relevant, and sheds
light on the relation between the exact wavefunction factorization and the
adiabatic approximation.


title: Information slows down hierarchy growth

abstract:
  We consider models of growing multi-level systems wherein the growth process
is driven by rules of tournament selection. A system can be conceived as an
evolving tree with a new node being attached to a contestant node at the best
hierarchy level (a level nearest to the tree root). The proposed evolution
reflects limited information on system properties available to new nodes. It
can also be expressed in terms of population dynamics. Two models are
considered: a constant tournament (CT) model wherein the number of tournament
participants is constant throughout system evolution, and a proportional
tournament (PT) model where this number increases proportionally to the growing
size of the system itself. The results of analytical calculations based on a
rate equation fit well to numerical simulations for both models. In the CT
model all hierarchy levels emerge but the birth time of a consecutive hierarchy
level increases exponentially or faster for each new level. The number of nodes
at the first hierarchy level grows logarithmically in time, while the size of
the last, "worst" hierarchy level oscillates quasi log-periodically. In the PT
model the occupations of the first two hierarchy levels increase linearly but
worse hierarchy levels either do not emerge at all or appear only by chance in
early stage of system evolution to further stop growing at all. The results
allow to conclude that information available to each new node in tournament
dynamics restrains the emergence of new hierarchy levels and that it is the
absolute amount of information, not relative, which governs such behavior.


title: DN Tauri - coronal activity and accretion in a young low-mass CTTS

abstract:
  We present a deep XMM-Newton observation of DN Tau, a young M0-type accreting
CTTS and investigate its X-ray properties and X-ray generating mechanisms.
Specifically we examine the presence of X-ray emission from magnetic activity
and accretion shocks and compare our new X-ray data with UV data taken
simultaneously and with X-ray/UV observations performed before. We find that
the X-ray emission from DN Tau is dominated by coronal plasma generated via
magnetic activity, but also clearly detect a contribution of the accretion
shocks to the cool plasma component at about 2 MK as consistently inferred from
density and temperature analysis. Typical phenomena of active coronae like
flaring, the presence of very hot plasma at 30 MK and an abundance pattern
showing the inverse FIP effect are seen on DN Tau. Strong variations in the
emission measure of the cooler plasma components between the 2005 and 2010 XMM
data point to accretion related changes. The UV light curve taken
simultaneously is in general not related to the X-ray brightness, but exhibits
clear counterparts during the observed X-ray flares. The X-ray properties of DN
Tau are similar to those of more massive CTTS, but its low mass and large
radius shift the accretion shocks to lower temperatures, reducing their imprint
in the X-ray regime.


title: Implementation of the twisted mass fermion operator in the QUDA library

abstract:
  We discuss an extension of the QUDA library for the Wilson twisted mass
operator. A performance analysis is presented for both degenerate and
non-degenerate flavor doublets. The degenerate twisted mass fermion operator
runs at up to 190, 487 and 856 Gflops, for double, single and half precisions
respectively on recent NVIDIA Kepler GPUs, while our implementation for the
non-degenerate flavor doublet allows to reach 163, 516 and 879 GFlops,
respectively. The code is currently in production for the hadron structure
study.


title: Regularity of A Complex Monge-Amp\`{e}re Equation on Hermitian Manifolds

abstract:
  We obtain higher order estimates for a parabolic flow on a compact Hermitian
manifold. As an application, we prove that a bounded
$\hat{\omega}$-plurisubharmonic solution of an elliptic complex
Monge-Amp\`{e}re equation is smooth under an assumption on the background
Hermitian metric $\hat{\omega}$. This generalizes a result of Sz\'{e}kelyhidi
and Tosatti on K\"{a}hler manifolds.


title:
Design, Environmental and Sustainability Constraints of new African
  Observatories: The example of the Mozambique Radio Astronomy Observatory

abstract:
  The Mozambique Radio Astronomy Observatory (MRAO) will be a first milestone
towards development of radioastronomy in Mozambique. Development of MRAO will
constitute a preparation step towards participation in the upcoming Africa VLBI
Network and the Square Kilometer Array project. The MRAO first antenna is
planned to serve as a capacitation and training facility and will be installed
after the conversion of a 7-meter telecom dish in South Africa. Therefore, this
first radiotelescope design has to comply with local spectral and environmental
constraints. Furthermore, power availability and long term sustainability with
potential inclusion of solar power and control of Radio Frequency Interference
are analyzed. Here we outline some of the design, environmental and power
sustainability constraints.