title: Surgery stable curvature conditions

abstract:
  We give a simple criterion for a pointwise curvature condition to be stable
under surgery. Namely, a curvature condition $C$, which is understood to be an
open, convex, O(n)-invariant cone in the space of algebraic curvature
operators, is stable under surgeries of codimension at least $c$ provided it
contains the curvature operator corresponding to $S^{c-1} \times
\reals^{n-c+1}$, $c \geq 3$.
  This is used to generalize the well-known classification result of positive
scalar curvature in the simply-connected case in the following way: Any
simply-connected manifold $M^n$, $n \geq 5$, which is either spin with
vanishing $\alpha$-invariant or else is non-spin admits for any $\epsilon > 0$
a metric such that the curvature operator satisfies $R > - \epsilon \norm{R}$.


title: Ghostbusting and property A

abstract:
  We show that a bounded geometry metric space X has property A if and only if
all ghost operators on X are compact.


title: Simple Rings and Degree Maps

abstract:
  For an extension A/B of neither necessarily associative nor necessarily
unital rings, we investigate the connection between simplicity of A with a
property that we call A-simplicity of B. By this we mean that there is no
non-trivial ideal I of B being A-invariant, that is satisfying AI \subseteq IA.
We show that A-simplicity of B is a necessary condition for simplicity of A for
a large class of ring extensions when B is a direct summand of A. To obtain
sufficient conditions for simplicity of A, we introduce the concept of a degree
map for A/B. By this we mean a map d from A to the set of non-negative integers
satisfying the following two conditions (d1) if a \in A, then d(a)=0 if and
only if a=0; (d2) there is a subset X of B generating B as a ring such that for
each non-zero ideal I of A and each non-zero a \in I there is a non-zero a' \in
I with d(a') \leq d(a) and d(a'b - ba') < d(a) for all b \in X. We show that if
the centralizer C of B in A is an A-simple ring, every intersection of C with
an ideal of A is A-invariant, ACA=A and there is a degree map for A/B, then A
is simple. We apply these results to various types of graded and filtered
rings, such as skew group rings, Ore extensions and Cayley-Dickson doublings.


title: Discriminantly separable polynomials and quad-equations

abstract:
  We classify the discriminantly separable polynomials of degree two in each of
three variables, defined by a property that all the discriminants as
polynomials of two variables are factorized as products of two polynomials of
one variable each. Our classification is based on the study of structures of
zeros of a polynomial component $P$ of a discriminant. This classification is
related to the classification of pencils of conics in a delicate way. We
establish a relationship between our classification and the classification of
integrable quad-equations which has been suggested recently by Adler, Bobenko,
and Suris.


title: Extensions of Verma modules

abstract:
  Comments on extensions of Verma modules in the Bernstein-Gelfand-Gelfand
Category O.


title: Quantum Measurements Constrained by Symmetries

abstract:
  We revisit the theorem of Wigner, Araki and Yanase (WAY) describing
limitations to repeatable quantum measurements that arise from the presence of
conservation laws. We will review a strengthening of this theorem by exhibiting
and discussing a condition that has hitherto not been identified as a relevant
factor. We will also show that an extension of the theorem to continuous
variables such as position and momentum can be obtained if the degree of
repeatability is suitably quantified.


title:
Width bifurcation and dynamical phase transitions in open quantum
  systems

abstract:
  The states of an open quantum system are coupled via the environment of
scattering wavefunctions. The complex coupling coefficients $\omega$ between
system and environment arise from the principal value integral and the
residuum. At high level density where the resonance states overlap, the
dynamics of the system is determined by exceptional points. At these points,
the eigenvalues of two states are equal and the corresponding eigenfunctions
are linearly dependent. It is shown in the present paper that Im$(\omega)$ and
Re$(\omega)$ influence the system properties differently in the surrounding of
exceptional points. Controlling the system by a parameter, the eigenvalues
avoid crossing in energy near an exceptional point under the influence of
Re$(\omega)$ in a similar manner as it is well known from discrete states.
Im$(\omega)$ however leads to width bifurcation and finally (when the system is
coupled to one channel, i.e. to a common continuum of scattering
wavefunctions), to a splitting of the system into two parts with different
characteristic time scales. Physically, the system is stabilized by this
splitting since the lifetimes of most ($N-1$) states are longer than before
while that of only one state is shorter. In the cross section the short-lived
state appears as a background term in high-resolution experiments. The
wavefunctions of the long-lived states are mixed in those of the original ones
in a comparably large parameter range. Numerical results for the eigenvalues
and eigenfunctions are shown for $N=2, ~4$ and 10 states coupled mostly to 1
channel.


title:
Magnetic field implementation in multiband k.p Hamiltonians of holes in
  semiconductor heterostructures

abstract:
  We propose an implementation of external homogeneous magnetic fields in
k$\cdot$p Hamiltonians for holes in heterostructures, in which we made use of
the minimal coupling prior to introduce the envelope function approximation.
Illustrative calculations for holes in InGaAs quantum dot molecules show that
the proposed Hamiltonian outperforms standard Luttinger model [Physical Review
102, 1030 (1956)] describing the experimentally observed magnetic response. The
present implementation culminates our previous proposal [Phys. Rev. B 82,
155307 (2010)].


title:
Quantum Gravity Framework 2.0 : A Complete Dynamical Framework of
  Principles for Quantization of General Relativity

abstract:
  Developing Planck scale physics requires addressing problem of time, quantum
reduction, determinism and continuum limit. In this article on the already
known foundations of quantum mechanics, a set of proposals of dynamics is built
on fully constrained discrete models: 1) Self-Evolution - Flow of time in the
phase space in a single point system, 2) Local Measurement by Local Reduction
through quantum diffusion theory, quantum diffusion equation is rederived with
different assumptions, 3) Quantum Evolution of a MultiPoint Discrete Manifold
of systems through a foliation chosen dynamically, and 4) Continuum Limit, and
Determinism are enforced by adding terms and averaging to the action. The
proposals are applied to the various physical scenarios such as: 1)
Minisuperspace reduced cosmology of isotropic and homogenous universe with
scalar field, 2) Expanding universe with perturbation, and 3) Newtonian
universe. Ways to experimentally test the theory is discussed. This article is
a further revision of its previous revision.


title: Extreme-Point Symmetric Mode Decomposition Method for Data Analysis

abstract:
  An extreme-point symmetric mode decomposition (ESMD) method is proposed to
improve the Hilbert-Huang Transform (HHT) through the following prospects: (1)
The sifting process is implemented by the aid of 1, 2, 3 or more inner
interpolating curves, which classifies the methods into ESMD_I, ESMD_II,
ESMD_III, and so on; (2) The last residual is defined as an optimal curve
possessing a certain number of extreme points, instead of general trend with at
most one extreme point, which allows the optimal sifting times and
decompositions; (3) The extreme-point symmetry is applied instead of the
envelop symmetry; (4) The data-based direct interpolating approach is developed
to compute the instantaneous frequency and amplitude. One advantage of the ESMD
method is to determine an optimal global mean curve in an adaptive way which is
better than the common least-square method and running-mean approach; another
one is to determine the instantaneous frequency and amplitude in a direct way
which is better than the Hilbert-spectrum method. These will improve the
adaptive analysis of the data from atmospheric and oceanic sciences,
informatics, economics, ecology, medicine, seismology, and so on.


title:
Dynamic Radio Resource Management for Random Network Coding: Power
  Control and CSMA Backoff Control

abstract:
  Resource allocation in wireless networks typically occurs at PHY/MAC layers,
while random network coding (RNC) is a network layer strategy. An interesting
question is how resource allocation mechanisms can be tuned to improve RNC
performance. By means of a differential equation framework which models RNC
throughput in terms of lower layer parameters, we propose a gradient based
approach that can dynamically allocate MAC and PHY layer resources with the
goal of maximizing the minimum network coding throughput among all the
destination nodes in a RNC multicast. We exemplify this general approach with
two resource allocation problems: (i) power control to improve network coding
throughput, and (ii) CSMA mean backoff delay control to improve network coding
throughput. We design both centralized algorithms and online algorithms for
power control and CSMA backoff control. Our evaluations, including numerically
solving the differential equations in the centralized algorithm and an
event-driven simulation for the online algorithm, show that such gradient based
dynamic resource allocation yields significant throughput improvement of the
destination nodes in RNC. Further, our numerical results reveal that network
coding aware power control can regain the broadcast advantage of wireless
transmissions to improve the throughput.


title:
The Derived Category of quasi-coherent sheaves on an Artin stack via
  model structures

abstract:
  We define the derived category of quasi--coherent modules for certain Artin
stacks as the homotopy category of two Quillen monoidal model structures on the
corresponding category of unbounded complexes of quasi--coherent modules.


title: Modelling light curves of binary systems: accounting for extended winds

abstract:
  We suggest a simple synthesis model of an eclipsing binary system which
includes one component with strong stellar wind. Numerical simulations show
that the shape of the light curve (and in particularly the widths of the
minima) strongly depends on wind parameters. Wind effects are crucial in
modelling light curves of binaries including e.g., WR stars.


title: Sketching Sparse Matrices

abstract:
  This paper considers the problem of recovering an unknown sparse p\times p
matrix X from an m\times m matrix Y=AXB^T, where A and B are known m \times p
matrices with m << p.
  The main result shows that there exist constructions of the "sketching"
matrices A and B so that even if X has O(p) non-zeros, it can be recovered
exactly and efficiently using a convex program as long as these non-zeros are
not concentrated in any single row/column of X. Furthermore, it suffices for
the size of Y (the sketch dimension) to scale as m = O(\sqrt{# nonzeros in X}
\times log p). The results also show that the recovery is robust and stable in
the sense that if X is equal to a sparse matrix plus a perturbation, then the
convex program we propose produces an approximation with accuracy proportional
to the size of the perturbation. Unlike traditional results on sparse recovery,
where the sensing matrix produces independent measurements, our sensing
operator is highly constrained (it assumes a tensor product structure).
Therefore, proving recovery guarantees require non-standard techniques. Indeed
our approach relies on a novel result concerning tensor products of bipartite
graphs, which may be of independent interest.
  This problem is motivated by the following application, among others.
Consider a p\times n data matrix D, consisting of n observations of p
variables. Assume that the correlation matrix X:=DD^{T} is (approximately)
sparse in the sense that each of the p variables is significantly correlated
with only a few others. Our results show that these significant correlations
can be detected even if we have access to only a sketch of the data S=AD with A
\in R^{m\times p}.


title:
Mirror symmetry: from active and sterile neutrino masses to baryonic and
  dark matter asymmetries

abstract:
  We consider an SU(3)'_c\times SU(2)'_L\times U(1)'_Y mirror sector where the
field content and dimensionless couplings are a copy of the SU(3)_c\times
SU(2)_L\times U(1)_Y ordinary sector. Our model also contains three
gauge-singlet fermions with heavy Majorana masses and an [SU(2)_L\times
SU(2)'_L]-bidoublet Higgs scalar with seesaw-suppressed vacuum expectation
value. The mirror sterile neutrino masses will have a form of canonical seesaw
while the ordinary active neutrino masses will have a form of double and linear
seesaw. In this canonical and double-linear seesaw scenario, we can expect one
sterile neutrino at the eV scale and the other two above the MeV scale to fit
the cosmological and short baseline neutrino oscillation data. Associated with
the SU(2)_L and SU(2)'_L sphaleron processes, the decays of the fermion
singlets can simultaneously generate a lepton asymmetry in the
[SU(2)_L]-doublet leptons and an equal lepton asymmetry in the
[SU(2)'_L]-doublet leptons to explain the existence of baryonic and dark
matter. The lightest mirror baryon then should have a determined mass around 5
GeV to account for the dark matter relic density. The U(1) kinetic mixing can
open a window for dark matter direct detection.


title:
The double-layer of penetrable ions: an alternative route to charge
  reversal

abstract:
  We investigate a double-layer of penetrable ions near a charged wall. We find
a new mechanism for charge reversal that occurs in the weak-coupling regime
and, accordingly, the system is suitable for the mean-field analysis. The
penetrability is achieved by smearing-out the ionic charge inside a sphere, so
there is no need to introduce non-electrostatic forces and the system in the
low coupling limit can be described by a modified version of the
Poisson-Boltzmann equation. The predictions of the theory are compared with the
Monte Carlo simulations.


title:
The tangential Cauchy-Riemann complex on the Heisenberg group Via
  Conformal Invariance

abstract:
  The Heisenberg group $\mathbb{H}^1$ is known to be conformally equivalent to
the CR sphere $\mathbb{S}^3$ minus a point. We use this fact, together with the
knowledge of the tangential Cauchy-Riemann operator on the compact CR manifold
$\mathbb{S}^3$, to solve the corresponding operator on $\mathbb{H}^1$.


title: Long-time existence of classical solutions to a 1-D swelling gel

abstract:
  In this paper we derived a model which describes the swelling dynamics of a
gel and study the system in one-dimensional geometry with a free boundary. The
governing equations are hyperbolic with a weakly dissipative source. Using a
mass-Lagrangian formulation, the free-boundary is transformed into a
fixed-boundary. We prove the existence of long time, continuously
differentiable solutions to the transformed fixed boundary problem.


title:
A Soft X-ray Beam-splitting Multilayer Optic for the NASA GEMS Bragg
  Reflection Polarimeter

abstract:
  A soft X-ray, beam-splitting, multilayer optic has been developed for the
Bragg Reflection Polarimeter (BRP) on the NASA Gravity and Extreme Magnetism
Small Explorer Mission (GEMS). The optic is designed to reflect 0.5 keV X-rays
through a 90 degree angle to the BRP detector, and transmit 2-10 keV X-rays to
the primary polarimeter. The transmission requirement prevents the use of a
thick substrate, so a 2 micron thick polyimide membrane was used. Atomic force
microscopy has shown the membrane to possess high spatial frequency roughness
less than 0.2 nm rms, permitting adequate X-ray reflectance. A multilayer thin
film was especially developed and deposited via magnetron sputtering with
reflectance and transmission properties that satisfy the BRP requirements and
with near-zero stress. Reflectance and transmission measurements of BRP
prototype elements closely match theoretical predictions, both before and after
rigorous environmental testing.


title:
High precision simulations of weak lensing effect on Cosmic Microwave
  Background polarization

abstract:
  We study accuracy, robustness and self-consistency of pixel-domain
simulations of the gravitational lensing effect on the primordial CMB
anisotropies due to the large-scale structure of the Universe. In particular,
we investigate dependence of the results precision on some crucial parameters
of such techniques and propose a semi-analytic framework to determine their
values so the required precision is a priori assured and the numerical workload
simultaneously optimized. Our focus is on the B-mode signal but we discuss also
other CMB observables, such as total intensity, T, and E-mode polarization,
emphasizing differences and similarities between all these cases. Our
semi-analytic considerations are backed up by extensive numerical results.
Those are obtained using a code, nicknamed lenS2HAT -- for Lensing using
Scalable Spherical Harmonic Transforms (S2HAT) -- which we have developed in
the course of this work. The code implements a version of the pixel-domain
approach of Lewis (2005) and permits performing the simulations at very high
resolutions and data volumes, thanks to its efficient parallelization provided
by the S2HAT library -- a parallel library for a calculation of the spherical
harmonic transforms. The code is made publicly available.


title:
Emerging of massive gauge particles in inhomogeneous local gauge
  transformations: replacement of Higgs mechanism

abstract:
  A generalized theory of gauge transformations is presented on the basis of
the covariant Hamiltonian formalism of field theory, for which the covariant
canonical field equations are equivalent to the Euler-Lagrange field equations.
Similar to the canonical transformation theory of point dynamics, the canonical
transformation rules for fields are derived from generating functions.
Thus---in contrast to the usual Lagrangian description---the covariant
canonical transformation formalism automatically ensures the mappings to
preserve the action principle, and hence to be {\em physical}. On that basis,
we work out the theory of inhomogeneous local gauge transformations that
generalizes the conventional local SU(N) gauge transformation theory. It is
shown that massive gauge bosons naturally emerge in this description, which
thus could supersede the Higgs mechanism.


title: Superconducting versus normal conducting cavities

abstract:
  One of the most important issues of high-power hadron linacs is the choice of
technology with respect to superconducting or room-temperature operation. The
favour for a specific technology depends on several parameters such as the beam
energy, beam current, beam power and duty factor. This contribution gives an
overview of the comparison between superconducting and normal conducting
cavities. This includes basic radiofrequency (RF) parameters, design criteria,
limitations, required RF and plug power as well as case studies.


title:
Time-resolved measurement of the tunnel magneto-Seebeck effect in a
  single magnetic tunnel junction

abstract:
  Recently, several groups have reported spin-dependent thermoelectric effects
in magnetic tunnel junctions. In this paper, we present a setup for
time-resolved measurements of thermovoltages and thermocurrents of a single
micro- to nanometer-scaled tunnel junction. An electrically modulated diode
laser is used to create a temperature gradient across the tunnel junction layer
stack. This laser modulation technique enables the recording of time-dependent
thermovoltage signals with a temporal resolution only limited by the
preamplifier for the thermovoltage. So far, time-dependent thermovoltage could
not be interpreted. Now, with the setup presented in this paper, it is possible
to distinguish different Seebeck voltage contributions to the overall measured
voltage signal in the {\mu}s time regime. A model circuit is developed that
explains those voltage contributions on different sample types. Further, it
will be shown that a voltage signal arising from the magnetic tunnel junction
can only be observed when the laser spot is directly centered on top of the
magnetic tunnel junction, which allows a lateral separation of the effects.


title: Characterization of products of theta divisors

abstract:
  We study products of irreducible theta divisors from two points of view. On
the one hand, we characterize them as normal subvarieties of abelian varieties
such that a desingularization has holomorphic Euler characteristic 1. On the
other hand, we identify them up to birational equivalence among all varieties
of maximal Albanese dimension. We also describe the structure of maximal
Albanese dimension varieties X with holomorphic Euler characteristic 1 and
irregularity 2dim X-1.


title: Index sets for Finite Normal Predicate Logic Programs

abstract:
  <Q>_e is the effective list of all finite predicate logic programs. <T_e> is
the list of recursive trees. We modify constructions of Marek, Nerode, and
Remmel [25] to construct recursive functions f and g such that for all indices
e, (i) there is a one-to-one degree preserving correspondence between the set
of stable models of Q_e and the set of infinite paths through T_{f(e)} and (ii)
there is a one-to-one degree preserving correspondence between the set of
infinite paths through T_e and the set of stable models of Q_{g(e)}. We use
these two recursive functions to reduce the problem of finding the complexity
of the index set I_P for various properties P of normal finite predicate logic
programs to the problem of computing index sets for primitive recursive trees
for which there is a large variety of results [6], [8], [16], [17], [18], [19].
We use our correspondences to determine the complexity of the index sets of all
programs and of certain special classes of finite predicate logic programs of
properties such as (i) having no stable models, (ii) having at least one stable
model, (iii) having exactly c stable models for any given positive integer c,
(iv) having only finitely many stable models, or (vi) having infinitely many
stable models.


title: Gabor Shearlets

abstract:
  In this paper, we introduce Gabor shearlets, a variant of shearlet systems,
which are based on a different group representation than previous shearlet
constructions: they combine elements from Gabor and wavelet frames in their
construction. As a consequence, they can be implemented with standard filters
from wavelet theory in combination with standard Gabor windows. Unlike the
usual shearlets, the new construction can achieve a redundancy as close to one
as desired. Our construction follows the general strategy for shearlets. First
we define group-based Gabor shearlets and then modify them to a cone-adapted
version. In combination with Meyer filters, the cone-adapted Gabor shearlets
constitute a tight frame and provide low-redundancy sparse approximations of
the common model class of anisotropic features which are cartoon-like
functions.


title:
Solving the Kohn Laplacian on asymptotically flat CR manifolds of
  dimension 3

abstract:
  Let $(\hat{X}, T^{1,0} \hat{X})$ be a compact orientable CR embeddable three
dimensional strongly pseudoconvex CR manifold, where $T^{1,0} \hat{X}$ is a CR
structure on $\hat{X}$. Fix a point $p \in \hat{X}$ and take a global contact
form $\hat{\theta}$ so that $\hat{\theta}$ is asymptotically flat near $p$.
Then $(\hat{X}, T^{1,0} \hat{X}, \hat{\theta})$ is a pseudohermitian
$3$-manifold. Let $G_p \in C^{\infty} (\hat{X} \setminus \{p\})$, $G_p > 0$,
with $G_p(x) \sim \vartheta(x,p)^{-2}$ near $p$, where $\vartheta(x,y)$ denotes
the natural pseudohermitian distance on $\hat{X}$. Consider the new
pseudohermitian $3$-manifold with a blow-up of contact form $(\hat{X} \setminus
\{p\}, T^{1,0} \hat{X}, G^2_p \hat{\theta})$ and let $\Box_{b}$ denote the
corresponding Kohn Laplacian on $\hat{X} \setminus \{p\}$.
  In this paper, we prove that the weighted Kohn Laplacian $G^2_p \Box_b$ has
closed range in $L^2$ with respect to the weighted volume form $G^2_p
\hat{\theta} \wedge d\hat{\theta}$, and that the associated partial inverse and
the Szeg\"{o} projection enjoy some regularity properties near $p$. As an
application, we prove the existence of some special functions in the kernel of
$\Box_{b}$ that grow at a specific rate at $p$. The existence of such functions
provides an important ingredient for the proof of a positive mass theorem in
3-dimensional CR geometry by Cheng-Malchiodi-Yang.


title: Efficiency of heat engines coupled to nonequilibrium reservoirs

abstract:
  We consider quantum heat engines that operate between nonequilibrium
stationary reservoirs. We evaluate their maximum efficiency from the positivity
of the entropy production and show that it can be expressed in terms of an
effective temperature that depends on the nature of the reservoirs. We further
compute the efficiency at maximum power for different kinds of engineered
reservoirs and derive a nonequilibrium generalization of the Clausius statement
of the second law.


title:
Thermodynamics in the vicinity of a relativistic quantum critical point
  in 2+1 dimensions

abstract:
  We study the thermodynamics of the relativistic quantum O($N$) model in two
space dimensions. In the vicinity of the zero-temperature quantum critical
point (QCP), the pressure can be written in the scaling form
$P(T)=P(0)+N(T^3/c^2)\calF_N(\Delta/T)$ where $c$ is the velocity of the
excitations at the QCP and $\Delta$ is a characteristic zero-temperature energy
scale. Using both a large-$N$ approach to leading order and the nonperturbative
renormalization group, we compute the universal scaling function $\calF_N$. For
small values of $N$ ($N\lesssim 10$) we find that $\calF_N(x)$ is nonmonotonous
in the quantum critical regime ($|x|\lesssim 1$) with a maximum near $x=0$. The
large-$N$ approach -- if properly interpreted -- is a good approximation both
in the renormalized classical ($x\lesssim -1$) and quantum disordered
($x\gtrsim 1$) regimes, but fails to describe the nonmonotonous behavior of
$\calF_N$ in the quantum critical regime. We discuss the renormalization-group
flows in the various regimes near the QCP and make the connection with the
quantum nonlinear sigma model in the renormalized classical regime. We compute
the Berezinskii-Kosterlitz-Thouless transition temperature in the quantum O(2)
model and find that in the vicinity of the QCP the universal ratio
$\Tkt/\rho_s(0)$ is very close to $\pi/2$, implying that the stiffness
$\rho_s(\Tkt^-)$ at the transition is only slightly reduced with respect to the
zero-temperature stiffness $\rho_s(0)$. Finally, we briefly discuss the
experimental determination of the universal function $\calF_2$ from the
pressure of a Bose gas in an optical lattice near the
superfluid--Mott-insulator transition.


title:
A Complete Transport Validated Model on a Zeolite Membrane for Carbon
  Dioxide Permeance and Capture

abstract:
  The CO2 emissions from major industries cause serious global environment
problems and their mitigation is urgently needed. The use of zeolite membranes
is a very efficient way in order to capture CO2 from some flue gases. The
dominant transport mechanism at low temperature andor high pressure is the
diffusion through the membrane. This procedure can be divided in three steps:
Adsorption of the molecules of the species in the surface of the membrane, then
a driving force gives a path where the species follow inside the membrane and
finally the species desorbed from the surface of the membrane. The current work
is aimed at developing a simulation model for the CO2 transport through a
zeolite membrane and estimate the diffusion phenomenon through a very thin
membrane of 150 nm in a Wicke-Kallenbach cell. The cell is cylindrical in shape
with diameter of 19 mm and consists of a retentate gas chamber, a permeate gas
chamber which are separated by a cylindrical zeolite membrane. This apparatus
have been modeled with Comsol Multiphysics software. The gas chosen to insert
in the retentate gas chamber is CO2 and the inert gas is Argon. The
Maxwell-Stefan surface equations used in order to calculate the velocity
gradients inside the zeolite membrane and in order to solve the velocity
profile within the permeate and retentate gas chamber, the incompressible
Navier-Stokes equations were solved. Finally, the mass balance equation for
both gases solved with the mass balance differential equations. Validation of
our model has been obtained at low and high temperatures suggesting that higher
the temperature the better the results.


title: Continuity of Dirac Spectra

abstract:
  It is a well-known fact that on a bounded spectral interval the Dirac
spectrum can be described locally by a non-decreasing sequence of continuous
functions of the Riemannian metric. In the present article we extend this
result to a global version. We think of the spectrum of a Dirac operator as a
function from the integers to the reals and endow the space of all spectra with
an arsinh-uniform metric. We prove that the spectrum of the Dirac operator
depends continuously on the Riemannian metric. As a corollary, we obtain the
existence of a non-decreasing family of functions on the space of all
Riemannian metrics, which represents the entire Dirac spectrum at any metric.
We also show that in general these functions do not descend to the space of
Riemannian metrics modulo spin diffeomorphisms due to spectral flow.


title: Restriction Estimates for space curves with respect to general measures

abstract:
  In this paper we consider adjoint restriction estimates for space curves with
respect to general measures and obtain optimal estimates when the curves
satisfy a finite type condition. The argument here is new in that it doesn't
rely on the \emph{offspring curve} method, which has been extensively used in
the previous works. Our work was inspired by the recent argument due to
Bourgain and Guth which was used to deduce linear restriction estimates from
multilinear estimates for hypersurfaces.


title:
Combining Total Monte Carlo and Benchmarks for nuclear data uncertainty
  propagation on an LFRs safety parameters

abstract:
  Analyses are carried out to assess the impact of nuclear data uncertainties
on keff for the European Lead Cooled Training Reactor (ELECTRA) using the Total
Monte Carlo method. A large number of Pu-239 random ENDF-formated libraries
generated using the TALYS based system were processed into ACE format with
NJOY99.336 code and used as input into the Serpent Monte Carlo neutron
transport code to obtain distribution in keff. The keff distribution obtained
was compared with the latest major nuclear data libraries - JEFF-3.1.2,
ENDF/B-VII.1 and JENDL-4.0. A method is proposed for the selection of
benchmarks for specific applications using the Total Monte Carlo approach.
Finally, an accept/reject criterion was investigated based on chi square values
obtained using the Pu-239 Jezebel criticality benchmark. It was observed that
nuclear data uncertainties in keff were reduced considerably from 748 to 443
pcm by applying a more rigid acceptance criteria for accepting random files.


title:
Reconstructing the Lensing Mass in the Universe from Photometric
  Catalogue Data

abstract:
  High precision cosmological distance measurements towards individual objects
such as time delay gravitational lenses or type Ia supernovae are affected by
weak lensing perturbations by galaxies and groups along the line of sight. In
time delay gravitational lenses, "external convergence," kappa, can dominate
the uncertainty in the inferred distances and hence cosmological parameters. In
this paper we attempt to reconstruct kappa, due to line of sight structure,
using a simple halo model. We use mock catalogues from the Millennium
Simulation, and calibrate and compare our reconstructed P(kappa) to ray-traced
kappa "truth" values; taking into account realistic observational
uncertainties. We find that the reconstruction of kappa provides an improvement
in precision of ~50% over galaxy number counts. We find that the lowest-kappa
lines of sight have the best constrained P(kappa). In anticipation of large
future samples of lenses, we find that selecting the third of the systems with
the highest precision kappa estimates gives a sample of unbiased time delay
distance measurements with just ~1% uncertainty due to line of sight external
convergence effects. Photometric data are sufficient to pre-select the
best-constrained lines of sight, and can be done before investment in
light-curve monitoring. Conversely, we show that selecting lines of sight with
high external shear could, with the reconstruction model presented, induce
biases of up to 1% in time delay distance. We find that a major potential
source of systematic error is uncertainty in the high mass end of the stellar
mass-halo mass relation; this could introduce ~2% biases on the time-delay
distance if completely ignored. We suggest areas for the improvement of this
general analysis framework (including more sophisticated treatment of high mass
structures) that should allow yet more accurate cosmological inferences to be
made.


title:
Measurements of the fluctuation-induced in-plane magnetoconductivity at
  high reduced temperatures and magnetic fields in the iron arsenide
  BaFe(2-x)NixAs2

abstract:
  The superconducting fluctuations well inside the normal state of Fe-based
superconductors were studied through measurements of the in-plane
paraconductivity and magnetoconductivity in high quality BaFe(2-x)NixAs2
crystals with doping levels from the optimal (x=0.10) up to the highly
overdoped (x=0.20). These measurements, performed in magnetic fields up to 9 T
perpendicular to the ab (Fe) layers, allowed a reliable check of the
applicability to iron-based superconductors of Ginzburg-Landau approaches for
3D anisotropic compounds, even at high reduced temperatures and magnetic
fields. Our results also allowed us to gain valuable insights into the
dependence on the doping level of some central superconducting parameters
(coherence lengths and anisotropy factor).


title: Gravitational Wave Memory from the Relativistic Jet of Gamma-Ray Bursts

abstract:
  The gravitational wave (GW) memory from a radiating and decelerating point
mass is studied in detail. It is found that for isotropic photon emission the
memory generated from the photons is essentially the same with the memory from
the point mass that radiated the photons so that it is anti-beamed. On the
other hand, for anisotropic emission the memory from the photons may have a
non-vanishing amplitude even if it is seen with small viewing angles. In the
decelerating phases of gamma-ray burst (GRB) jets the kinetic energy of the jet
is converted into the energy of gamma-ray photons. Then it would be possible to
observe a variation in the GW memory associated with GRB jets on the timescale
of the gamma-ray emission if the emission is partially anisotropic. Such an
anisotropy in the gamma-ray emission has been suggested by the polarizations
detected in recent observations of GRBs. The GW memory from GRB jets would
provide clues to clarifying the geometry of the jets and the emission mechanism
in GRBs. Thus it will be an interesting target for the next generation
detectors of the GWs.


title: Excluding Graphs as Immersions in Surface Embedded Graphs

abstract:
  We prove a structural characterization of graphs that forbid a fixed graph
$H$ as an immersion and can be embedded in a surface of Euler genus $\gamma$.
In particular, we prove that a graph $G$ that excludes some connected graph $H$
as an immersion and is embedded in a surface of Euler genus $\gamma$ has either
"small" treewidth (bounded by a function of $H$ and $\gamma$) or "small" edge
connectivity (bounded by the maximum degree of $H$). Using the same techniques
we also prove an excluded grid theorem on bounded genus graphs for the
immersion relation.


title: Evolution of gravity-dark energy coupled expanding universe

abstract:
  The acceleration of the cosmic expansion revealed by supernova observations
indicates that the present universe is dominated by repulsive dark energy. It
is natural that the coupling between the dark energy and the attractive gravity
has to be taken into account in studying the evolution of our universe. Here we
induce a dynamic equation of universe evolution based on the cosmological
principal, gravity-dark energy coupling, and energy conservation. The solutions
of this dynamic equation provide a specific picture of cosmic evolution, which
is well compatible with current observed evolution histories of both Hubble
parameter H(z) and equation of state parameter w(z) of dark energy. In this
picture, the already observed universe has undergone through three epochs - the
epoch of equilibrium between gravity and dark energy at cosmological redshifts
z>1, the phase transition epoch at z between about 0.5 and 1, and the present
acceleration epoch starting from z~0.5. The expected matter-dominated
deceleration epoch has not been seen yet, which requires future deep
observations to look back upon more early universe.


title: Comparison of Capital Costs per Route-Kilometre in Urban Rail

abstract:
  Because of the prominent position of urban rail in reducing urban
transport-related problems, such as congestion and air pollution, insights into
the costs of possible new urban rail projects is very relevant for those
involved with cost estimations, policy makers, cost-benefit analysts, and other
target groups. Knowledge of the differences in costs per kilometre, including
explanations of differences and their breakdowns is currently lacking in the
literature. This paper aims to provide a first stage insight into how cost per
kilometre varies across urban rail projects. The methodology applied is a
simple cost comparison across projects where the data collected are comparable.
We conclude that capital costs per route-kilometre of urban rail vary highly
between projects. Looking at European projects and excluding outliers, the
total capital costs per route-kilometre (including stations and rolling stock)
lie mainly between US$50-100 million (2002 prices). Including US projects, the
range is US$50-150 million. The main reasons for the high variation in the
route-kilometre costs are differences between projects as regards the ratio of
underground to above-ground construction, ground conditions, station spacing,
type of rolling stock, environmental and safety constraints and labour costs.
We warn, however, that the observations used to reach the conclusions are too
few to obtain results with statistical significance. Our results must therefore
be seen as a first step towards collecting more data so that a more succinct
statistical analysis can be conducted. Another conclusion is therefore that
this area has future research potential.


title: On synchronized non-sofic subshifts

abstract:
  We show that a synchronized coded system $X$ is intrinsically ergodic of full
support if and only if $ h(Y)$, the topological entropy of $Y$, is less than
$h(X) $ whenever $Y$ is a proper subsystem of $ X $. We also show that like
systems with specification property, SVGL's the non-mixing extension of systems
with specification property, are intrinsically ergodic of full support.
Moreover, we compute the entropy of the underlying graph of the Fischer cover
of a synchronized system.


title:
Survival of the Unfittest: Why the Worst Infrastructure Gets Built, And
  What We Can Do about It

abstract:
  The article first describes characteristics of major infrastructure projects.
Second, it documents a much neglected topic in economics: that ex ante
estimates of costs and benefits are often very different from actual ex post
costs and benefits. For large infrastructure projects the consequence is cost
overruns, benefit shortfalls, and the systematic underestimation of risks.
Third, implications for cost-benefit analysis are described, including that
such analysis is not to be trusted for major infrastructure projects. Fourth,
the article uncovers the causes of this state of affairs in terms of perverse
incentives that encourage promoters to underestimate costs and overestimate
benefits in the business cases for their projects. But the projects that are
made to look best on paper are the projects that amass the highest cost
overruns and benefit shortfalls in reality. The article depicts this situation
as "survival of the un-fittest." Fifth, the article sets out to explain how the
problem may be solved, with a view to arriving at more efficient and more
democratic projects, and avoiding the scandals that often accompany major
infrastructure investments. Finally, the article identifies current trends in
major infrastructure development. It is argued that a rapid increase in
stimulus spending combined with more investments in emerging economies combined
with more spending on information technology is catapulting infrastructure
investment from the frying pan into the fire.


title:
Switching and propagation of magneto-plasmon-polaritons in magnetic slot
  waveguides and cavities

abstract:
  The dispersion relations for surface plasmon-polaritons propagating in the
Voigt geometry in a metal-insulator-metal waveguide with a magneto-optically
active dielectric medium are derived. The symmetry between the upper and lower
interfaces is broken by the introduction of the magnetic field; the balance
between the field distributions on the two interfaces can be controlled by the
applied field. This control is illustrated by finite-element method numerical
simulations of the field distributions around a point dipole placed in the
centre of the short waveguide; it is shown that both the total emission of
radiation from the cavity and the distribution of the far-field radiation can
be strongly modified by tuning the magnetisation of the waveguide. This raises
the novel possibility of using magnetic fields to control light propagation in
nanostructures.


title:
Density Controlled Divide-and-Rule Scheme for Energy Efficient Routing
  in Wireless Sensor Networks

abstract:
  Cluster based routing technique is most popular routing technique in Wireless
Sensor Networks (WSNs). Due to varying need of WSN applications efficient
energy utilization in routing protocols is still a potential area of research.
In this research work we introduced a new energy efficient cluster based
routing technique. In this technique we tried to overcome the problem of
coverage hole and energy hole. In our technique we controlled these problems by
introducing density controlled uniform distribution of nodes and fixing optimum
number of Cluster Heads (CHs) in each round. Finally we verified our technique
by experimental results of MATLAB simulations.


title:
Quantum-mechanical description of spin-1 particles with electric dipole
  moments

abstract:
  The Proca-Corben-Schwinger equations for a spin-1 particle with an anomalous
magnetic moment are added by a term describing an electric dipole moment, then
they are reduced to a Hamiltonian form, and finally they are brought to the
Foldy-Wouthuysen representation. Relativistic equations of motion are derived.
The needed agreement between quantum-mechanical and classical relativistic
equations of motion is proved. The scalar and tensor electric and magnetic
polarizabilities of pointlike spin-1 particles (W bosons) are calculated for
the first time.


title:
Mirage Models Confront the LHC: I. Kahler-Stabilized Heterotic String
  Theory

abstract:
  We begin the study of a class of string-motivated effective supergravity
theories in light of current data from the CERN Large Hadron Collider (LHC).
The case of heterotic string theory, in which the dilaton is stabilized via
non-perturbative corrections to the Kahler metric, will be considered first.
This model is highly constrained and therefore predictive. We find that much of
the reasonable parameter space afforded to the model -- representing the strong
dynamics of a presumed gaugino condensation in the hidden sector -- is now
observationally disfavored by the LHC results. Most of the
theoretically-motivated parameter space that remains can be probed with data
that has already been collected, and most of the remainder will be definitively
explored within the first year of operation at center of mass energy of 13 TeV.
Expected signatures for a number of benchmark points are discussed. We find
that the surviving space of the model makes a precise prediction as to the
relation of many superpartner masses, as well as the manner in which the
correct dark matter relic density is obtained. Implications for current and
future dark matter search experiments are discussed.


title: The Foundations of Analysis

abstract:
  This is a detailed and self-contained introduction to the real number system
from a categorical perspective. We begin with the categorical definition of the
natural numbers, review the Eudoxus theory of ratios as presented in Book V of
Euclid, and then use these classical results to define the positive real
numbers categorically.


title: Entanglement switching via the Kondo effect in triple quantum dots

abstract:
  We consider a triple quantum dot system in a triangular geometry with one of
the dots connected to metallic leads. Using Wilson's numerical renormalization
group method, we investigate quantum entanglement and its relation to the
thermodynamic and transport properties, in the regime where each of the dots is
singly occupied on average, but with non-negligible charge fluctuations. It is
shown that even in the regime of significant charge fluctuations the formation
of the Kondo singlets induces switching between separable and perfectly
entangled states. The quantum phase transition between unentangled and
entangled states is analyzed quantitatively and the corresponding phase diagram
is explained by exactly solvable spin model.


title:
Measurement of $ D^{*\pm}$ production in deep inelastic scattering at
  HERA

abstract:
  The production of $D^{*\pm}$ mesons in deep inelastic $ep$ scattering has
been measured for exchanged photon virtualities $ 5<Q^2<1000 \gev^2 $, using an
integrated luminosity of 363 pb$^{-1}$ with the ZEUS detector at HERA.
Differential cross sections have been measured and compared to
next-to-leading-order QCD calculations. The cross-sections are used to extract
the charm contribution to the proton structure functions, expressed in terms of
the reduced charm cross section, $\sigma_{\rm red}^{c\bar{c}}$. Theoretical
calculations based on fits to inclusive HERA data are compared to the results.


title:
Superconductivity and Crystal Structure of the Palladium-Iron-Arsenides
  Ca10(Fe1-xPdxAs)10Pd3As8

abstract:
  The palladium-iron-arsenides Ca10(Fe1-xPdxAs)10(Pd3As8) were synthesized by
solid state methods and characterized by X-ray powder and single crystal
diffraction. The triclinic crystal structure (space group P-1) is isotypic to
the homologue platinum 1038 type superconductors with alternating FeAs4/4- and
Pd3As8-layers, each separated by layers of calcium atoms. Iron is tetrahedral
and palladium is planar coordinated by four arsenic atoms. As2-dimers (dAs-As =
250 pm) are present in the Pd3As8-layer. Even though each layer itself has a
fourfold rotational symmetry, the shifted layer stacking causes the triclinic
space group. Resistivity measurements of La-doped samples show the onset of
superconductivity at 17 K and zero resistivity below 10 K. The magnetic
shielding fraction is about 20 % at 3.5 K. 57Fe-M\"ossbauer spectra exhibit one
absorption line and show no hint to magnetic ordering. The electronic structure
is very similar to the known iron-arsenides with cylinder-like Fermi surfaces
and partial nesting between hole- and electron-like sheets. Our results show
that superconductivity in the palladium-iron-compounds is present but
complicated by too high substitution of iron by palladium in the active
FeAs-layers. Since the electronic preconditions are satisfied, we expect higher
critical temperatures in Pd1038-compounds with lower or even without Pd-doping
in the FeAs-layer.


title:
Coarse-Graining Can Beat the Rotating Wave Approximation in Quantum
  Markovian Master Equations

abstract:
  We present a first-principles derivation of the Markovian semi-group master
equation without invoking the rotating wave approximation (RWA). Instead we use
a time coarse-graining approach which leaves us with a free timescale
parameter, which we can optimize. Comparing this approach to the standard
RWA-based Markovian master equation, we find that significantly better
agreement is possible using the coarse-graining approach, for a three-level
model coupled to a bath of oscillators, whose exact dynamics we can solve for
at zero temperature. The model has the important feature that the RWA has a
non-trivial effect on the dynamics of the populations. We show that the two
different master equations can exhibit strong qualitative differences for the
population of the energy eigenstates even for such a simple model. The
RWA-based master equation misses an important feature which the coarse-graining
based scheme does not. By optimizing the coarse-graining timescale the latter
scheme can be made to approach the exact solution much more closely than the
RWA-based master equation.


title: Novel carbon materials: new tunneling systems

abstract:
  This review covers recent achievements in the studies of quantum properties
of the novel carbon materials (fullerite C60 and bundles of single-walled
nanotubes (SWNT)) saturated with such light-mass species as helium isotopes,
the homonuclear molecular hydrogens, and neon. It is shown that even some heavy
dopants demon-strate kinetic phenomena, in which coherent effects play an
essential role. Two theoretical concepts are surveyed which have been suggested
for the explanation of the anomalous phenomena in saturation kinetics and
linear thermal expansion of doped C60. Most unusual effects have been also
observed in the low-temperature radial ex-pansion of bundles of single-walled
carbon nanotubes saturated with the helium isotopes. First, it was shown that
low-temperature radial expansion of pure SWNT is negative, i.e., a nanotube
shrinks with warming. Second, sa-turation of SWNT bundles with the helium
isotopes entails a huge increase of the negative expansion effect, when the
dopant is He. So far, no detailed physical picture has been put forward. It is
worth mentioning that the dynamics of a single helium atom on an isolated
nanotube corresponds to that of a tight-bound quasiparticle with a band width
of about 10 K.


title: Classification of Half Planar Maps

abstract:
  We characterize all translation invariant half planar maps satisfying a
certain natural domain Markov property. For p-angulations with p \ge 3 where
all faces are simple, we show that these form a one-parameter family of
measures H^{(p)}_{alpha}. For triangulations we also establish existence of a
phase transition which affects many properties of these maps. The critical maps
are the well known half plane uniform infinite planar maps. The sub-critical
maps are identified as all possible limits of uniform measures on finite maps
with given boundary and area.


title:
A Lower Growth Rate from Recent Redshift Space Distortion Measurements
  than Expected from Planck

abstract:
  We perform a meta-study of recently published Redshift Space Distortion (RSD)
measurements of the cosmological growth rate, f(z) \sigma_8(z). We analyse the
latest results from the 6dFGS, BOSS, LRG, WiggleZ and VIPERS galaxy redshift
surveys, and compare the measurements to expectations from Planck. In this
Letter we point out that the RSD measurements are consistently lower than the
values expected from Planck, and the relative scatter between the RSD
measurements is lower than expected. A full resolution of this issue may
require a more robust treatment of non-linear effects in RSD models, although
the trend for a low \sigma_8 agrees with recent constraints on \sigma_8 and
\Omega_m from Sunyaev-Zeldovich cluster counts identified in Planck.


title:
Simple, asymptotically distribution-free, optimal tests for circular
  reflective symmetry about a known median direction

abstract:
  In this paper, we propose optimal tests for circular reflective symmetry
about a fixed median direction. The distributions against which optimality is
achieved are the so-called k-sine-skewed distributions of Umbach and
Jammalamadaka (2009). We first show that sequences of k-sine-skewed models are
locally and asymptotically normal in the vicinity of reflective symmetry.
Following the Le Cam methodology, we then construct optimal (in the maximin
sense) parametric tests for reflective symmetry, which we render
semi-parametric by a studentization argument. These asymptotically
distribution-free tests happen to be uniformly optimal (under any reference
density) and are moreover of a very simple and intuitive form. They furthermore
exhibit nice small sample properties, as we show through a Monte Carlo
simulation study. Our new tests also allow us to re-visit the famous red wood
ants data set of Jander (1957). We further show that one of the proposed
parametric tests can as well serve as a test for uniformity against cardioid
alternatives; this test coincides with the famous circular Rayleigh (1919) test
for uniformity which is thus proved to be (also) optimal against cardioid
alternatives. Moreover, our choice of k-sine-skewed alternatives, which are the
circular analogues of the classical linear skew-symmetric distributions,
permits us a Fisher singularity analysis \`a la Hallin and Ley (2012) with the
result that only the prominent sine-skewed von Mises distribution suffers from
these inferential drawbacks. Finally, we conclude the paper by discussing the
unspecified location case.


title: From a sounding rocket per year to an observatory per lifetime

abstract:
  I summarize the excitement of my role primarily in the early years of X-ray
Astronomy. As a "second-generation" X-ray astronomer, I was privileged to
participate in the enormous advance of the field, both technically and
astrophysically, that occurred in the late 1960's and 1970's. The remainder of
my career has concentrated on the design, construction, calibration, operation,
and scientific maintenance of the "cathedral" that is the Chandra X-Ray
Observatory. I contrast my early experiences with the current environment for
the design and development of instrumentation, especially X-ray optics, which
are absolutely essential for the development of the discipline. I express my
concerns for the future of X-ray astronomy and offer specific suggestions that
I hope will advance the discipline at a more effective and rapid pace.


title:
The algebraic fundamental group of a reductive group scheme over an
  arbitrary base scheme

abstract:
  We define the algebraic fundamental group functor of a reductive group scheme
over an arbitrary (non-empty) base scheme and prove that this functor is exact.


title: Form Sequences to Polynomials and Back, via Operator Orderings

abstract:
  C.M. Bender and G. V. Dunne showed that linear combinations of words
$q^{k}p^{n}q^{n-k}$, where $p$ and $q$ are subject to the relation $qp - pq =
\imath$, may be expressed as a polynomial in the symbol $z =
\tfrac{1}{2}(qp+pq)$. Relations between such polynomials and linear
combinations of the transformed coefficients are explored. In particular,
examples yielding orthogonal polynomials are provided.


title:
Cluster Lensing Profiles Derived from a Redshift Enhancement of
  Magnified BOSS-Survey Galaxies

abstract:
  We report the first detection of a redshift-depth enhancement of background
galaxies magnified by foreground clusters. Using 300,000 BOSS-Survey galaxies
with accurate spectroscopic redshifts, we measure their mean redshift depth
behind four large samples of optically selected clusters from the SDSS surveys,
totalling 5,000-15,000 clusters. A clear trend of increasing mean redshift
towards the cluster centers is found, averaged over each of the four cluster
samples. In addition we find similar but noisier behaviour for an independent
X-ray sample of 158 clusters lying in the foreground of the current BOSS sky
area. By adopting the mass-richness relationships appropriate for each survey
we compare our results with theoretical predictions for each of the four SDSS
cluster catalogs. The radial form of this redshift enhancement is well fitted
by a richness-to-mass weighted composite Navarro-Frenk-White profile with an
effective mass ranging between M_200 ~ 1.4-1.8 10^14 M_sun for the optically
detected cluster samples, and M_200 ~ 5.0 10^14 M_sun for the X-ray sample.
This lensing detection helps to establish the credibility of these SDSS cluster
surveys, and provides a normalization for their respective mass-richness
relations. In the context of the upcoming bigBOSS, Subaru-PFS, and EUCLID-NISP
spectroscopic surveys, this method represents an independent means of deriving
the masses of cluster samples for examining the cosmological evolution, and
provides a relatively clean consistency check of weak-lensing measurements,
free from the systematic limitations of shear calibration.


title: Effects as functions on projective Hilbert space

abstract:
  The set of effect operators in a complex Hilbert space can be injectively
embedded into the set of functions from the set of one-dimensional projections
to the real interval [0,1]. Properties of this injection are investigated.


title: The Zagier polynomials. Part II: Arithmetic properties of coefficients

abstract:
  The modified Bernoulli numbers \begin{equation*} B_{n}^{*} = \sum_{r=0}^{n}
\binom{n+r}{2r} \frac{B_{r}}{n+r}, \quad n > 0 \end{equation*} introduced by D.
Zagier in 1998 were recently extended to the polynomial case by replacing
$B_{r}$ by the Bernoulli polynomials $B_{r}(x)$. Arithmetic properties of the
coefficients of these polynomials are established. In particular, the 2-adic
valuation of the modified Bernoulli numbers is determined. A variety of
analytic, umbral, and asymptotic methods is used to analyze these polynomials.


title:
The couplings of the Higgs boson and its CP properties from fits of the
  signal strengths and their ratios at the 7+8 TeV LHC

abstract:
  Using the full set of the LHC Higgs data from the runs at 7 and 8 TeV center
of mass energies that have been released by the ATLAS and CMS collaborations,
we determine the couplings of the Higgs particle to fermions and gauge bosons
as well as its parity or CP composition. We consider ratios of production cross
sections times decay branching fractions in which the theoretical (and some
experimental) uncertainties as well as as some ambiguities from new physics
cancel out. A fit of both the signal strengths in the various search channels
that have been conducted, H -> Z Z, W W, gamma gamma, tau tau and b b, and
their ratios shows that the observed ~126 GeV particle has couplings to
fermions and gauge bosons that are Standard Model-like already at the 68%
confidence level (CL). From the signal strengths in which the theoretical
uncertainty is taken to be a bias, the particle is shown to be at most 68%
CP-odd at the 99%CL and the possibility that it is a pure pseudoscalar state is
excluded at the 4 sigma level when including both the experimental and
theoretical uncertainties. The signal strengths also measure the invisible
Higgs decay width which, with the same type of uncertainty analysis, is shown
to be Gamma_H^inv / Gamma_H^SM < 0.52 at the 68%CL.


title:
Spectroscopic and Photometric Development of T Pyxidis (2011) from 0.8
  to 250 Days After Discovery

abstract:
  We investigated the optical light curve of T Pyx during its 2011 outburst
through compiling a database of SMEI and AAVSO observations. The SMEI light
curve, providing unprecedented detail with high cadence data during t=1.5-49
days post-discovery, was divided into four phases based on the idealised nova
optical light curve; the initial rise, the pre-maximum halt (or the 'plateau'),
the final rise, and the early decline. Variation in the SMEI light curve
reveals a strongly detected period of 1.44\pm0.04 days before the visual
maximum. The spectra from the LT and SMARTS telescopes were investigated during
t=0.8-80.7 and 155.1-249.9 days. The nova was observed very early in its rise
and a distinct high velocity ejection phase was evident. A marked drop and then
gradual increase in derived ejection velocities were present. Here we propose
two different stages of mass loss, a short-lived phase occurring immediately
after outburst followed by a more steadily evolving and higher mass loss phase.
The overall spectral development follows that typical of a Classical Nova and
comparison to the photometric behaviour reveals consistencies with the simple
evolving pseudo-photosphere model of the nova outburst. The optical spectra are
also compared to X-ray and radio light curves. Weak [Fe X] 6375A emission was
marginally detected before the rise in X-ray emission. The middle of the
plateau in the X-ray light curve is coincident with the appearance of high
ionization species detected in optical spectra and the peak of the high
frequency radio flux.


title:
C, N, O, and Na Abundances of Cepheid Variables: Implications on the
  Mixing Process in the Envelope

abstract:
  With an aim of investigating the nature of evolution-induced mixing in the
envelope of evolved intermediate-mass stars, we carried out an extensive
spectroscopic study for 12 Cepheid variables of various pulsation periods
(~2-16 days) to determine the photospheric abundances of C, N, O, and Na, which
are the key elements for investigating how the H-burning products are salvaged
from the interior, based on 122 high-dispersion echelle spectra (~10 per
target) of wide wavelength coverage collected at Bohyunsan Astronomical
Observatory. Having established the relevant atmospheric parameters
corresponding to each phase spectroscopically from the equivalent widths of Fe
I and Fe II lines, we derived C, N, O, and Na abundances from C I, O I, N I,
and Na I lines by using the spectrum-synthesis fitting technique, while taking
into account the non-LTE effect. The resulting abundances of these elements for
12 program stars turned out to show remarkably small star-to-star dispersions
(<~0.1-0.2dex) without any significant dependence upon the pulsation period:
near-solar Fe ([Fe/H] ~0.0), moderately underabundant C ([C/H] -0.3),
appreciably overabundant N ([N/H] ~+0.4-0.5), and mildly supersolar Na ([Na/H]
+0.2). We conclude the following implications from these observational facts:
(1) These CNO abundance trends can be interpreted mainly as due to the
canonical dredge-up of CN-cycled material, while any significant non-canonical
deep mixing of ON-cycled gas is ruled out (though only a slight mixing may
still be possible). (2) The mild but definite overabundance of Na suggests that
the NeNa-cycle product is also dredged up. (3) The extent of mixing-induced
peculiarities in the envelope of Cepheid variables is essentially independent
on the absolute magnitude; i.e., also on the stellar mass.


title: Metal nanoparticle plasmons operating within quantum lifetime

abstract:
  We investigate the dynamics of a plasmonic oscillation over a metal
nanoparticle when it is strongly coupled to a quantum emitter (e.g. quantum
dot, molecule). We simulate the density matrix evolution for a simple model;
coupled classical--quantum oscillators system. We show that lifetime of the
plasmonic oscillations can be increased several orders of magnitude, upto the
decay time of the quantum emitter. This effect shows itself as the narrowing of
the plasmon emission band in the spaser (surface plasmon amplification by
stimulated emission of radiation) experiment [{\it Nature}, {\bf 2009}, 460,
1110], where a gold nanoparticle interacts with the surrounding molecules.
Enhancement of the plasmonic excitation lifetime enables stimulated emission to
overcome the spontaneous one. The enhancement occurs due to the emergence of a
phenomenon analogous to electromagnetically induced transparency (EIT). The
effect can find applications in many areas of nanoscale physics, such as in
quantum information with plasmons and in increasing solar cell efficiency.


title:
High quality factor mg-scale silicon mechanical resonators for 3-mode
  optoacoustic parametric amplifiers

abstract:
  Milligram-scale resonators have been shown to be suitable for the creation of
3-mode optoacoustic parametric amplifiers, based on a phenomena first predicted
for advanced gravitational-wave detectors. To achieve practical optoacoustic
parametric amplification, high quality factor resonators are required. We
present millimetre-scale silicon resonators designed to exhibit a torsional
vibration mode with a frequency in the 10^5 - 10^6 Hz range, for observation of
3-mode optoacoustic interactions in a compact table-top system. Our design
incorporates an isolation stage and minimizes the acoustic loss from optical
coating. We observe a quality factor of 7.5 x 10^5 for a mode frequency of
401.5 kHz, at room temperature and pressure of 10^-3 Pa. We confirmed the mode
shape by mapping the amplitude response across the resonator and comparing to
finite element modelling. This study contributes towards the development of
3-mode optoacoustic parametric amplifiers for use in novel high-sensitivity
signal transducers and quantum measurement experiments.


title: Optimal control of transitions between nonequilibrium steady states

abstract:
  Biological systems fundamentally exist out of equilibrium in order to
preserve organized structures and processes. Many changing cellular conditions
can be represented as transitions between nonequilibrium steady states, and
organisms have an interest in optimizing such transitions. Using the
Hatano-Sasa Y-value, we extend a recently developed geometrical framework for
determining optimal protocols so that it can be applied to systems driven from
nonequilibrium steady states. We calculate and numerically verify optimal
protocols for a colloidal particle dragged through solution by a translating
optical trap with two controllable parameters. We offer experimental
predictions, specifically that optimal protocols are significantly less costly
than naive ones. Optimal protocols similar to these may ultimately point to
design principles for biological energy transduction systems and guide the
design of artificial molecular machines.


title:
Direct Numerical Test of the Statistical Mechanical Theory of
  Hydrophobic Interactions

abstract:
  This work tests the statistical mechanical theory of hydrophobic
interactions, isolates consequences of excluded volume interactions, and
obtains B2 for those purposes. Cavity methods that are particularly appropriate
for study of hydrophobic interactions between atomic-size hard spheres in
liquid water are developed and applied to test aspects of the Pratt-Chandler
(PC) theory that have not been tested. Contact hydrophobic interactions between
Ar-size hard-spheres in water are significantly more attractive than predicted
by the PC theory. The corresponding results for the osmotic second virial
coefficient are attractive (B2 <0), and more attractive with increasing
temperature (Delta B2/Delta T < 0) in the temperature range 300K < T < 360K.
This information has not been available previously, but is essential for
development of the molecular-scale statistical mechanical theory of hydrophobic
interactions, particularly for better definition of the role of attractive
intermolecular interactions associated with the solutes.


title: Warped Functional Analysis of Variance

abstract:
  This article presents an Analysis of Variance model for functional data that
explicitly incorporates phase variability through a time-warping component,
allowing for a unified approach to estimation and inference in presence of
amplitude and time variability. The focus is on single-random-factor models but
the approach can be easily generalized to more complex ANOVA models. The
behavior of the estimators is studied by simulation, and an application to the
analysis of growth curves of flour beetles is presented. Although the model
assumes a smooth latent process behind the observed trajectories, smoothness of
the observed data is not required; the method can be applied to the sparsely
observed data that is often encountered in longitudinal studies.


title: Charge transport in pn and npn junctions of silicene

abstract:
  We investigate charge transport of pn and npn junctions made from silicene,
Si analogue of graphene. The conductance shows the distinct gate-voltage
dependences peculiar to the topological and non-topological phases, where the
topological phase transition is caused by external electric field. Namely, the
conductance is suppressed in the np regime when the both sides are topological,
while in the nn regime when one side is topological and the other side is
non-topological. Furthermore, we find that the conductance is almost quantized
to be 0, 1 and 2. Our findings will open a new way to nanoelectronics based on
silicene.


title:
Generalized Parton Distributions in the valence region from Deeply
  Virtual Compton Scattering

abstract:
  This work reviews the recent developments in the field of Generalized Parton
Distributions (GPDs) and Deeply virtual Compton scattering in the valence
region, which aim at extracting the quark structure of the nucleon. We discuss
the constraints which the present generation of measurements provide on GPDs,
and examine several state-of-the-art parametrizations of GPDs. Future
directions in this active field are discussed.


title:
Inhomogeneous spin domain induced by the quadratic Zeeman effect in
  spin-1 Bose-Einstein condensate

abstract:
  We show two kinds of inhomogeneous spin domain possessing N\'{e}el-like
domain walls in spin-1 Bose-Einstein condensate, which are induced by the
positive and negative quadratic Zeeman effect (QZE) respectively. In both
cases, the spin density distribution is inhomogeneous and has zeros where the
magnetization vanishes. For positive and negative QZE, the spin patterns and
topological structures are remarkably different. Such phenomena are due to the
pointwise different axisymmetry-breaking caused by the pointwise different
population exchange between the sublevels, arising uniquely from the QZE. We
analyze in detail the inhomogeneous domain formation and related experimental
observations for the spin-1 $^{87}$Rb and $^{23}$Na condensate.


title: Dynamics of strain bifurcations in magnetostrictive ribbon

abstract:
  We develop a coupled nonlinear oscillator model involving magnetization and
strain to explain several experimentally observed dynamical features exhibited
by forced magnetostrictive ribbon. Here we show that the model recovers the
observed period doubling route to chaos as function of the dc field for a fixed
ac field and quasiperiodic route to chaos as a function of the ac field,
keeping the dc field constant. The model also predicts induced and suppressed
chaos under the influence of an additional small-amplitude near resonant ac
field. Our analysis suggests rich dynamics in coupled order parameter systems
like magnetomartensitic and magnetoelectric materials.


title: Molecular Memory with Atomically-Smooth Graphene Contacts

abstract:
  We report the use of bilayer graphene as an atomically-smooth contact for
nanoscale devices. A two-terminal Bucky ball (C60) based molecular memory is
fabricated with bilayer graphene as a contact on the polycrystalline nickel
electrode. Graphene provides an atomically-smooth covering over an otherwise
rough metal surface. The use of graphene additionally prohibits the
electromigration of nickel atoms into the C60 layer. The devices exhibit a
low-resistance state in the first sweep cycle and irreversibly switch to a high
resistance state at 0.8-1.2 V bias. The reverse sweep has a hysteresis behavior
as well. In the subsequent cycles, the devices retain the high-resistance
state, thus making it write-once read-many memory (WORM). The ratio of current
in low-resistance to high-resistance state is lying in 20-40 range for various
devices with excellent retention characteristics. Control sample without the
bilayer graphene shows random hysteresis and switching.


title: Underestimating Costs in Public Works Projects: Error or Lie?

abstract:
  This article presents results from the first statistically significant study
of cost escalation in transportation infrastructure projects. Based on a sample
of 258 transportation infrastructure projects worth US$90 billion and
representing different project types, geographical regions, and historical
periods, it is found with overwhelming statistical significance that the cost
estimates used to decide whether such projects should be built are highly and
systematically misleading. Underestimation cannot be explained by error and is
best explained by strategic misrepresentation, that is, lying. The policy
implications are clear: legislators, administrators, investors, media
representatives, and members of the public who value honest numbers should not
trust cost estimates and cost-benefit analyses produced by project promoters
and their analysts.


title:
Color-Kinematics Duality for Pure Yang-Mills and Gravity at One and Two
  Loops

abstract:
  We provide evidence in favor of the conjectured duality between color and
kinematics for the case of nonsupersymmetric pure Yang-Mills amplitudes by
constructing a form of the one-loop four-point amplitude of this theory that
makes the duality manifest. Our construction is valid in any dimension. We also
describe a duality-satisfying representation for the two-loop four-point
amplitude with identical four-dimensional external helicities. We use these
results to obtain corresponding gravity integrands for a theory containing a
graviton, dilaton, and antisymmetric tensor, simply by replacing color factors
with specified diagram numerators. Using this, we give explicit forms of
ultraviolet divergences at one loop in four, six, and eight dimensions, and at
two loops in four dimensions.


title: Intrinsic Unpredictability of Epidemic Outbreaks on Networks

abstract:
  It has been known that epidemic outbreaks in the SIR model on networks are
described by phase transitions. Despite the similarity with percolation
transitions, whether an epidemic outbreak occurs or not cannot be predicted
with probability one in the thermodynamic limit. We elucidate its mechanism by
deriving a simple Langevin equation that captures an essential aspect of the
phenomenon. We also calculate the probability of epidemic outbreaks near the
transition point.


title:
Dynamics of X-Ray-Emitting Ejecta in the Oxygen-Rich Supernova Remnant
  Puppis A Revealed by the XMM-Newton RGS

abstract:
  Using the unprecedented spectral resolution of the reflection grating
spectrometer (RGS) onboard XMM-Newton, we reveal dynamics of X-ray--emitting
ejecta in the oxygen-rich supernova remnant Puppis A. The RGS spectrum shows
prominent K-shell lines, including O VII He_alpha forbidden and resonance, O
VIII Ly_alpha, O VIII Ly_beta, and Ne IX He_alpha resonance, from an ejecta
knot positionally coincident with an optical oxygen-rich filament (the
so-called Omega filament in the northeast of the remnant). We find that the
line centroids are blueshifted by 1480+/-140+/-60 km/s (the first and second
term errors are measurement and calibration uncertainties, respectively), which
is fully consistent with that of the optical Omega filament. Line broadening at
654 eV (corresponding to O VIII Ly_alpha) is obtained to be less than ~0.9 eV,
indicating an oxygen temperature of less than ~30 keV. Analysis of XMM-Newton
MOS spectra shows an electron temperature of ~0.8 keV and an ionization
timescale of ~2e10 cm^-3 s. We show that the oxygen and electron temperatures
as well as the ionization timescale can be reconciled if the ejecta knot was
heated by a collisionless shock whose velocity is ~600-1200 km/s and was
subsequently equilibrated due to Coulomb interactions. The RGS spectrum also
shows relatively weak K-shell lines of another ejecta feature located near the
northeastern edge of the remnant, from which we measure redward Doppler
velocities of 650+/-70+/-60 km/s.


title: Consequences of Heavy Quark Symmetries for Hadronic Molecules

abstract:
  Among the newly observed structures in the heavy quarkonium mass region, some
are proposed to be hadronic molecules. We investigate the consequences of heavy
quark flavor symmetry on these heavy meson hadronic molecules. The symmetry
allows us to predict new hadronic molecules on one hand, and test the hadronic
molecular assumption of the observed structures on the other hand. We explore
the consequences of the flavor symmetry assuming the X(3872) and $Z_b(10610)$
as a isoscalar $D\bar D^*$ and isovector $B\bar B^*$ hadronic molecule,
respectively. A series of hadronic molecules composed of heavy mesons are
predicted. In particular, there is an isoscalar $1^{++}$ $B\bar B^*$ bound
state with a mass of 10580 MeV which may be searched for in the
$\Upsilon(1S,2S)\pi^+\pi^-\pi^0$ mass distribution; the isovector charmonium
partners of the $Z_b(10610)$ and the $Z_b(10650)$ are also predicted, one of
which probably corresponds to the very recently observed $Z_c(3900)$ and
$Z_c(4025)$ resonances by the BESIII Collaboration.


title: Exploiting Opportunistic Physical Design in Large-scale Data Analytics

abstract:
  Large-scale systems, such as MapReduce and Hadoop, perform aggressive
materialization of intermediate job results in order to support fault
tolerance. When jobs correspond to exploratory queries submitted by data
analysts, these materializations yield a large set of materialized views that
typically capture common computation among successive queries from the same
analyst, or even across queries of different analysts who test similar
hypotheses. We propose to treat these views as an opportunistic physical design
and use them for the purpose of query optimization. We develop a novel
query-rewrite algorithm that addresses the two main challenges in this context:
how to search the large space of rewrites, and how to reason about views that
contain UDFs (a common feature in large-scale data analytics). The algorithm,
which provably finds the minimum-cost rewrite, is inspired by nearest-neighbor
searches in non-metric spaces. We present an extensive experimental study on
real-world datasets with a prototype data-analytics system based on Hive. The
results demonstrate that our approach can result in dramatic performance
improvements on complex data-analysis queries, reducing total execution time by
an average of 61% and up to two orders of magnitude.


title: Photodynamics of stress in clamped nematic elastomers

abstract:
  We describe the complex time-dependence of the build up of force exerted by a
clamped photo-elastomer under illumination. Nonlinear (non-Beer) absorption
leads to a bleaching wave of a significant cis isomer dye concentration deeply
penetrating the solid with a highly characteristic dynamics. We fit our
experimental response at one temperature to obtain material parameters.
Force-time data can be matched at all other temperatures with no fitting
required -- our model provides a universal description of this unusual
dynamics. The description is unambiguous since these are clamped systems where
gross polymer motion is suppressed as a possible source of anomalous dynamics.
Future experiments are suggested.


title: Influence of the Heisenberg Principle on the Ideal Bose Gas

abstract:
  The ideal Bose gas has two major shortcomings: at zero temperature, all the
particles 'condense' at zero energy or momentum, thus violating the Heisenberg
principle; the second is that the pressure below the critical point is
independent of density resulting in zero incompressibility (or infinite
isothermal compressibility) which is unphysical. We propose a modification of
the ideal Bose gas to take into account the Heisenberg principle. This
modification results in a finite (in)compressibility at all temperatures and
densities. The main properties of the ideal Bose gas are preserved, i.e. the
relation between the critical temperature and density, but the specific heat
has a maximum at the critical temperature instead of a discontinuity. Of course
interactions are crucial for both cases in order to describe actual physical
systems.


title: Constraints on Spin-Dependent Short-Range Interaction between Nucleons

abstract:
  We report on the search for a new spin-dependent P- and T-violating
interaction between nucleons mediated by light, pseudoscalar bosons such as the
axion which was invented to solve the strong CP problem. Our experimental
approach is to use an ultra-sensitive low-field magnetometer based on the
detection of free precession of co-located 3He and 129Xe nuclear spins using
SQUIDs as low-noise magnetic flux detectors. In the presence of an unpolarized
mass the precession frequency shif


title: Optical Activity and Mirror-Symmetry

abstract:
  A misconception that non-chiral molecules have no optical activity at all is
widespread. However, at molecular level even non-chiral molecules have optical
activity. Optical activity of a non-chiral molecule is canceled out by that of
another molecule in its mirror image in normal liquids. We describe the
canceling mechanism by using mirror-symmetry of physical laws without resorting
to detailed formulas. The description will be helpful for overcoming the
misconception. Optical activity can be understood from the opposite viewpoint
by the description. Aligned non-chiral molecules have optical activity.


title:
On the Statistical Significance of the Bulk Flow Measured by the PLANCK
  Satellite

abstract:
  A recent analysis of data collected by the Planck satellite detected a net
dipole at the location of X-ray selected galaxy clusters, corresponding to a
large-scale bulk flow extending at least to $z\sim 0.18$, the median redshift
of the cluster sample. The amplitude of this flow, as measured with Planck, is
consistent with earlier findings based on data from the Wilkinson Microwave
Anisotropy Probe (WMAP). However, the uncertainty assigned to the dipole by the
Planck team is much larger than that found in the WMAP studies, leading the
authors of the Planck study to conclude that the observed bulk flow is not
statistically significant. We here show that two of the three implementations
of random sampling used in the error analysis of the Planck study lead to
systematic overestimates in the uncertainty of the measured dipole. Random
simulations of the sky do not take into account that the actual realization of
the sky leads to filtered data that have a 12% lower root-mean-square
dispersion than the average simulation. Using rotations around the Galactic
pole (the Z axis), increases the uncertainty of the X and Y components of the
dipole and artificially reduces the significance of the dipole detection from
98-99% to less than 90% confidence. When either effect is taken into account,
the corrected errors agree with those obtained using random distributions of
clusters on Planck data, and the resulting statistical significance of the
dipole measured by Planck is consistent with that of the WMAP results.


title: An asymptotic parallel-in-time method for highly oscillatory PDEs

abstract:
  We present a new time-stepping algorithm for nonlinear PDEs that exhibit
scale separation in time. Our scheme combines asymptotic techniques (which are
inexpensive but can have insufficient accuracy) with parallel-in-time methods
(which, alone, can be inefficient for equations that exhibit rapid temporal
oscillations). In particular, we use an asymptotic numerical method for
computing, in serial, a solution with low accuracy, and a more expensive fine
solver for iteratively refining the solutions in parallel. We present examples
on the rotating shallow water equations that demonstrate that significant
parallel speedup and high accuracy are achievable.


title:
Velocity-Field Theory, Boltzmann's Transport Equation, Geometry and
  Emergent Time

abstract:
  Boltzmann equation describes the time development of the velocity
distribution in the continuum fluid matter. We formulate the equation using the
field theory where the {\it velocity-field} plays the central role. The
properties of the fluid matter (fluid particles) appear as the density and the
viscosity. {\it Statistical fluctuation} is examined, and is clearly
discriminated from the quantum effect. The time variable is {\it emergently}
introduced through the computational process step. Besides the ordinary
potential, the general velocity potential is introduced. The collision term,
for the Higgs-type velocity potential, is explicitly obtained and the
(statistical) fluctuation is closely explained. The system is generally {\it
non-equilibrium}. The present field theory model does {\it not} conserve energy
and is an open-system model. One dimensional Navier-Stokes equation, i.e.,
Burgers equation, appears. In the latter part of the text, we present a way to
directly define the distribution function by use of the geometry, appearing in
the energy expression, and Feynman's path-integral.


title: Statistics of transitions for Markov chains with periodic forcing

abstract:
  The influence of a time-periodic forcing on stochastic processes can
essentially be emphasized in the large time behaviour of their paths. The
statistics of transition in a simple Markov chain model permits to quantify
this influence. In particular the first Floquet multiplier of the associated
generating function can be explicitly computed and related to the equilibrium
probability measure of an associated process in higher dimension. An
application to the stochastic resonance is presented.


title:
Goal-oriented error estimation for the reduced basis method, with
  application to sensitivity analysis

abstract:
  The reduced basis method is a powerful model reduction technique designed to
speed up the computation of multiple numerical solutions of parametrized
partial differential equations. We consider a quantity of interest, which is a
linear functional of the PDE solution. A new probabilistic error bound for the
reduced model is proposed. It is efficiently and explicitly computable, and we
show on different examples that this error bound is sharper than existing ones.
We include application of our work to sensitivity analysis studies.


title:
An N-dimensional approach towards object based classification of
  remotely sensed imagery

abstract:
  Remote sensing techniques are widely used for land cover classification and
urban analysis. The availability of high resolution remote sensing imagery
limits the level of classification accuracy attainable from pixel-based
approach. In this paper object-based classification scheme based on a
hierarchical support vector machine is introduced. By combining spatial and
spectral information, the amount of overlap between classes can be decreased;
thereby yielding higher classification accuracy and more accurate land cover
maps. We have adopted certain automatic approaches based on the advanced
techniques as Cellular automata and Genetic Algorithm for kernel and tuning
parameter selection. Performance evaluation of the proposed methodology in
comparison with the existing approaches is performed with reference to the
Bhopal city study area.


title: The perturbative scalar massless propagator in Schwarzschild spacetime

abstract:
  A short derivation is given of the weak gravitational field approximation to
the scalar massless propagator in Schwarzschild spacetime obtained by Paszko
using the path-integral approach. The contribution from the direct coupling of
the quantum field to the scalar curvature is explictly included. The propagator
complies with Hadamard's pattern, and the vacuum state is consistent with the
perturbative version of the Boulware vacuum. The momentum space propagator is
computed for massless or massive particles to the same perturbative order. The
renormalized value of $\ < \phi^2(x)\ >$ for the massless case is reproduced.


title:
A unified model for the dynamics of driven ribbon with strain and
  magnetic order parameters

abstract:
  We develop a unified model to explain the dynamics of driven one dimensional
ribbon for materials with strain and magnetic order parameters. We show that
the model equations in their most general form explain several results on
driven magnetostrictive metallic glass ribbons such as the period doubling
route to chaos as a function of a dc magnetic field in the presence of a
sinusoidal field, the quasiperiodic route to chaos as a function of the
sinusoidal field for a fixed dc field, and induced and suppressed chaos in the
presence of an additional low amplitude near resonant sinusoidal field. We also
investigate the influence of a low amplitude near resonant field on the period
doubling route. The model equations also exhibit symmetry restoring crisis with
an exponent close to unity. The model can be adopted to explain certain results
on magnetoelastic beam and martensitic ribbon under sinusoidal driving
conditions. In the latter case, we find interesting dynamics of a periodic one
orbit switching between two equivalent wells as a function of an ac magnetic
field that eventually makes a direct transition to chaos under resonant driving
condition. The model is also applicable to magnetomartensites and materials
with two order parameters.


title: Overview of Nuclear Physics at Jefferson Lab

abstract:
  The Continuous Electron Beam Accelerator Facility (CEBAF) and associated
experimental equipment at Jefferson Lab comprise a unique facility for
experimental nuclear physics. This facility is presently being upgraded, which
will enable a new experimental program with substantial discovery potential to
address important topics in nuclear, hadronic, and electroweak physics. Further
in the future, it is envisioned that the Laboratory will evolve into an
electron-ion colliding beam facility.


title: Phase Transitions in the Quadratic Contact Process on Complex Networks

abstract:
  The quadratic contact process (QCP) is a natural extension of the well
studied linear contact process where infected (1) individuals infect
susceptible (0) neighbors at rate $\lambda$ and infected individuals recover
($1 \longrightarrow 0$) at rate 1. In the QCP, a combination of two 1's is
required to effect a $0 \longrightarrow 1$ change. We extend the study of the
QCP, which so far has been limited to lattices, to complex networks.
\comment{as a model for the change in a population through sexual reproduction
and death.} We define two versions of the QCP -- vertex centered (VQCP) and
edge centered (EQCP) with birth events $1-0-1 \longrightarrow 1-1-1$ and $1-1-0
\longrightarrow 1-1-1$ respectively, where `$-$' represents an edge. We
investigate the effects of network topology by considering the QCP on random
regular, Erd\H{o}s-R\'{e}nyi and power law random graphs. We perform mean field
calculations as well as simulations to find the steady state fraction of
occupied vertices as a function of the birth rate. We find that on the random
regular and Erd\H{o}s-R\'{e}nyi graphs, there is a discontinuous phase
transition with a region of bistability, whereas on the heavy tailed power law
graph, the transition is continuous. The critical birth rate is found to be
positive in the former but zero in the latter.


title: Stochastic Isometries in Quantum Mechanics

abstract:
  The class of stochastic maps, that is, linear, trace-preserving, positive
maps between the self-adjoint trace class operators of complex separable
Hilbert spaces plays an important role in the representation of reversible
dynamics and symmetry transformations. Here a characterization of the isometric
stochastic maps is given and possible physical applications are indicated.


title:
Bifurcation of periodic solutions from a ring configuration of discrete
  nonlinear oscillators

abstract:
  This paper gives an analysis of the periodic solutions of a ring of $n$
oscillators coupled to their neighbors. We prove the bifurcation of branches of
such solutions from a relative equilibrium, and we study their symmetries. We
give complete results for a cubic Schr\"odinger potential and for a saturable
potential and for intervals of the amplitude of the equilibrium. The tools for
the analysis are the orthogonal degree and representation of groups. The
bifurcation of relative equilibria was given in a previous paper.


title:
Dirichlet Heat Kernel Estimates for Subordinate Brownian Motions with
  Gaussian Components

abstract:
  In this paper, we derive explicit sharp two-sided estimates for the Dirichlet
heat kernels, in C^{1,1} open sets D in R^d, of a large class of subordinate
Brownian motions with Gaussian components. When D is bounded, our sharp
two-sided Dirichlet heat kernel estimates hold for all t>0. Integrating the
heat kernel estimates with respect to the time variable t, we obtain sharp
two-sided estimates for the Green functions, in bounded C^{1,1} open sets, of
such subordinate Brownian motions with Gaussian components.


title:
Low energy solutions for the semiclassical limit of Schroedinger Maxwell
  systems

abstract:
  We show that the number of solutions of Schroedinger Maxwell system on a
smooth bounded domain in R^3 depends on the topological properties of the
domain. In particular we consider the Lusternik-Schnirelmann category and the
Poincar\'e polynomial of the domain.


title: Gradient expansion of superhorizon perturbations in G-inflation

abstract:
  We develop the gradient expansion formalism for shift-symmetric Galileon-type
actions. We focus on backgrounds that undergo inflation, work in the
synchronous gauge, and obtain a general solution up to second order without
imposing extra conditions at first order. The solution simplifies during the
late stages of inflation. We also define a curvature perturbation conserved up
to first order.


title:
Early-Type Galaxy Archeology: Ages, Abundance Ratios, and Effective
  Temperatures from Full-Spectrum Fitting

abstract:
  The stellar populations of galaxies hold vital clues to their formation
histories. In this paper we present results based on modeling stacked spectra
of early-type galaxies drawn from the Sloan Digital Sky Survey (SDSS) as a
function of velocity dispersion, sigma, from 90 km/s to 300 km/s. The spectra
are of extremely high quality, with typical S/N of 1000/A, and a wavelength
coverage of 4000A-8800A. Our population synthesis model includes variation in
16 elements from C to Ba, the shift in effective temperature, Delta(Teff), of
the stars with respect to a solar metallicity isochrone, amongst other
parameters. In our approach we fit the full optical spectra rather than a
select number of spectral indices and are able to, for the first time, measure
the abundances of the elements V, Cr, Mn, Co, and Ni from the integrated light
of distant galaxies. Our main results are as follows: 1) light-weighted stellar
ages range from 6-12 Gyr from low to high sigma; 2) [Fe/H] varies by less than
0.1 dex across the entire sample; 3) Mg closely tracks O, and both increase
from ~0.0 at low sigma to ~0.25 at high sigma; Si and Ti show a shallower rise
with sigma, and Ca tracks Fe rather than O; 4) the iron peak elements V, Cr,
Mn, and Ni track Fe, while Co tracks O, suggesting that Co forms primarily in
massive stars; 5) C and N track O over the full sample and [C/Fe] and [N/Fe]
exceed 0.2 at high sigma; and 6) the variation in Delta(Teff) with total
metallicity follows theoretical predictions based on stellar evolution theory.
Our derived [Mg/Fe] and [O/Fe] abundance ratios are 0.05-0.1 dex lower than
most previous determinations. Under the conventional interpretation that the
variation in these ratios is due to star formation timescale variations, our
results suggest longer star formation timescales for massive early-type
galaxies than previous studies. (ABRIDGED)


title:
Simulations of Galileon modified gravity: Clustering statistics in real
  and redshift space

abstract:
  We use N-body simulations to study the statistics of massive halos and
redshift space distortions for theories with a standard \Lambda CDM expansion
history and a galileon-type scalar field. The extra scalar field increases the
gravitational force, leading to enhanced structure formation. We compare our
measurements of the real space matter power spectrum and halo properties with
fitting formula for estimating these quantities analytically. We find that a
model for power spectrum, halo mass-function and halo bias, derived from
\Lambda CDM simulations can fit the results from our simulations of modified
gravity when \sigma_8 is appropriately adjusted. We also study the redshift
space distortions in the two point correlation function measured from these
simulations, finding a difference in the ratio of the redshift space to real
space clustering amplitude relative to standard gravity on all scales. We find
enhanced clustering on scales r>10 Mpc/h and increased damping of the
correlation function for scales r<9 Mpc/h. The boost in the clustering on large
scales due to the enhanced gravitational forces cannot be mimicked in a
standard gravity model by simply changing \sigma_8. This result illustrates the
usefulness of redshift space distortion measurements as a probe of
modifications to General Relativity.