title: Space-time deformations as extended conformal transformations

abstract:
  A definition of space-time metric deformations on an $n$-dimensional manifold
is given. We show that such deformations can be regarded as extended conformal
transformations. In particular, their features can be related to the
perturbation theory giving a natural picture by which gravitational waves are
described by small deformations of the metric. As further result, deformations
can be related to approximate Killing vectors (approximate symmetries) by which
it is possible to parameterize the deformed region of a given manifold. The
perspectives and some possible physical applications of such an approach are
discussed.


title:
Coupled-channels analyses for large-angle quasi-elastic scattering in
  massive systems

abstract:
  We discuss in detail the coupled-channels approach for the large-angle
quasi-elastic scattering in massive systems, where many degrees of freedom may
be involved in the reaction. We especially investigate the effects of single,
double and triple phonon excitations on the quasi-elastic scattering for
$^{48}$Ti,$^{54}$Cr,$^{56}$Fe,$^{64}$Ni and $^{70}$Zn$+^{208}$Pb systems, for
which the experimental cross sections have been measured recently. We show that
the present coupled-channels calculations well account for the overall width of
the experimental barrier distribution for these systems. In particular, it is
shown that the calculations taking into account single quadrupole phonon
excitations in $^{48}$Ti and triple octupole phonon excitations in $^{208}$Pb
reasonably well reproduce the experimental quasi-elastic cross section and
barrier distribution for the $^{48}$Ti$+^{208}$Pb reaction. On the other hand,
$^{54}$Cr,$^{56}$Fe,$^{64}$Ni and $^{70}$Zn$+^{208}$Pb systems seem to require
the double quadrupole phonon excitations in the projectiles in order to
reproduce the experimental data.


title:
Non-Markovian diffusion equations and processes: analysis and
  simulations

abstract:
  In this paper we introduce and analyze a class of diffusion type equations
related to certain non-Markovian stochastic processes. We start from the
forward drift equation which is made non-local in time by the introduction of a
suitable chosen memory kernel K(t). The resulting non-Markovian equation can be
interpreted in a natural way as the evolution equation of the marginal density
function of a random time process l(t). We then consider the subordinated
process Y(t)=X(l(t)) where X(t) is a Markovian diffusion. The corresponding
time evolution of the marginal density function of Y(t) is governed by a
non-Markovian Fokker-Planck equation which involves the memory kernel K(t). We
develop several applications and derive the exact solutions. We consider
different stochastic models for the given equations providing path simulations.

categories: math-ph cond-mat.stat-mech math.MP math.PR physics.data-an


title: The variational particle-mesh method for matching curves

abstract:
  Diffeomorphic matching (only one of several names for this technique) is a
technique for non-rigid registration of curves and surfaces in which the curve
or surface is embedded in the flow of a time-series of vector fields. One seeks
the flow between two topologically-equivalent curves or surfaces which
minimises some metric defined on the vector fields, \emph{i.e.} the flow
closest to the identity in some sense.
  In this paper, we describe a new particle-mesh discretisation for the
evolution of the geodesic flow and the embedded shape. Particle-mesh algorithms
are very natural for this problem because Lagrangian particles (particles
moving with the flow) can represent the movement of the shape whereas the
vector field is Eulerian and hence best represented on a static mesh. We
explain the derivation of the method, and prove conservation properties: the
discrete method has a set of conserved momenta corresponding to the
particle-relabelling symmetry which converge to conserved quantities in the
continuous problem. We also introduce a new discretisation for the geometric
current matching condition of (Vaillant and Glaunes, 2005). We illustrate the
method and the derived properties with numerical examples.


title: Gravitational corrections to Standard Model vacuum decay

abstract:
  We refine and update the metastability constraint on the Standard Model top
and Higgs masses, by analytically including gravitational corrections to the
vacuum decay rate. Present best-fit ranges of the top and Higgs masses mostly
lie in the narrow metastable region. Furthermore, we show that the SM potential
can be fine-tuned in order to be made suitable for inflation. However, SM
inflation results in a power spectrum of cosmological perturbations not
consistent with observations.


title:
Incremental Magnetoelastic Deformations, with Application to Surface
  Instability

abstract:
  In this paper the equations governing the deformations of infinitesimal
(incremental) disturbances superimposed on finite static deformation fields
involving magnetic and elastic interactions are presented. The coupling between
the equations of mechanical equilibrium and Maxwell's equations complicates the
incremental formulation and particular attention is therefore paid to the
derivation of the incremental equations, of the tensors of magnetoelastic
moduli and of the incremental boundary conditions at a magnetoelastic/vacuum
interface. The problem of surface stability for a solid half-space under plane
strain with a magnetic field normal to its surface is used to illustrate the
general results. The analysis involved leads to the simultaneous resolution of
a bicubic and vanishing of a 7x7 determinant. In order to provide specific
demonstration of the effect of the magnetic field, the material model is
specialized to that of a "magnetoelastic Mooney-Rivlin solid". Depending on the
magnitudes of the magnetic field and the magnetoelastic coupling parameters,
this shows that the half-space may become either more stable or less stable
than in the absence of a magnetic field.


title:
Chemical composition of A and F dwarf members of the Coma Berenices open
  cluster

abstract:
  Abundances of 18 chemical elements have been derived for 11 A (normal and Am)
and 11 F dwarfs members of the Coma Berenices open cluster in order to set
constraints on evolutionary models including transport processes (radiative and
turbulent diffusion)calculated with the Montreal code. A spectral synthesis
iterative procedure has been applied to derive the abundances from selected
high quality lines in high resolution high signal-to-noise echelle spectra
obtained with ELODIE at the Observatoire de Haute Provence. The chemical
pattern found for the A and F dwarfs in Coma Berenices is reminiscent of that
found in the Hyades and the UMa moving group. In graphs representing the
abundances [X/H] versus the effective temperature, the A stars often display
abundances much more scattered around their mean values than the F stars do.
Large star-to-star variations are detected for A stars in their abundances
which we interpret as evidence of transport processes competing with radiative
diffusion. The F stars have solar abundances for almost all elements except for
Mg, Si, V and Ba. The derived abundances patterns, [X/H] versus atomic number,
for the slow rotator HD108642 (A2m) and the moderately fast rotator HD106887
(A4m) were compared to the predictions of self consistent evolutionary model
codes including radiative and different amounts of turbulent diffusion. None of
the models reproduces entirely the overall shape of the abundance pattern.
While part of the discrepancies between derived and predicted abundances may be
accounted for by non-LTE effects, the inclusion of competing processes such as
rotational mixing in the radiative zones of these stars seems necessary to
improve the agreement between observed and predicted abundance patterns.


title: On the Structure of Equidistant Foliations of Euclidean Space

abstract:
  This thesis is concerned with equidistant foliations of Euclidean space, i.e.
partitions into complete, connected, properly embedded smooth submanifolds. The
space of leaves is an Alexandrov space of nonnegative curvature and the
canonical projection is a submetry. Generalizing a result of Gromoll and
Walschap we show that an equidistant foliation always has an affine leaf and we
prove homogeneneity of the foliation under certain additional assumptions.
Moreover, we give several reducibility results and construct new (noncompact)
inhomogeneous examples of equidistant foliations.


title:
Tidal Disruption of Stellar Objects by Hard Supermassive Black Hole
  Binaries

abstract:
  Supermassive black hole binaries (SMBHBs) are expected by the hierarchical
galaxy formation model in $\Lambda$CDM cosmology. There is some evidence in the
literature for SMBHBs in AGNs, but there are few observational constraints on
the evolution of SMBHBs in inactive galaxies and gas-poor mergers. On the
theoretical front, it is unclear how long is needed for a SMBHB in a typical
galaxy to coalesce. In this paper we investigate the tidal interaction between
stars and binary BHs and calculate the tidal disruption rates of stellar
objects by the BH components of binary. We derive the interaction cross
sections between SMBHBs and stars from intensive numerical scattering
experiments with particle number $\sim10^7$ and calculate the tidal disruption
rates by both single and binary BHs for a sample of realistic galaxy models,
taking into account the general relativistic effect and the loss cone refilling
because of two-body interaction. We estimate the frequency of tidal flares for
different types of galaxies using the BH mass function in the literature. We
find that because of the three-body slingshot effect, the tidal disruption rate
in SMBHB system is more than one order of magnitude smaller than that in single
SMBH system. The difference is more significant in less massive galaxies and
does not depend on detailed stellar dynamical processes. Our calculations
suggest that comparisons of the calculated tidal disruption rates for both
single and binary BHs and the surveys of X-ray or UV flares at galactic centers
could tell us whether most SMBHs in nearby galaxies are single and whether the
SMBHBs formed in gas-poor galaxy mergers coalesce rapidly.


title:
The self-enrichment scenario in intermediate metallicity globular
  clusters

abstract:
  We present stellar yields computed from detailed models of intermediate mass
asymptotic giant branch stars of low metallicity. In this work, the whole main
microphysics inputs have been updated, and in particular alpha-enhancement is
explicitly taken into account both in the opacities and equation of state. The
target of this work is to provide a basis to test the reliability of the AGB
self-enrichment scenario for Globular Clusters of intermediate metallicity.
These Globular Clusters exhibit well defined abundance patterns, which have
often been interpreted as a consequence of the pollution of the interstellar
medium by the ejecta of massive AGBs. We calculated a grid of intermediate mass
models with metallicity Z=0.001; the evolutionary sequences are followed from
the pre-Main sequence along the whole AGB phase. We focus our attention on
those elements largely studied in the spectroscopic investigations of Globular
Clusters stars, i.e. oxygen, sodium, aluminum, magnesium and fluorine.} The
predictions of our models show an encouraging agreement with the demand of the
self-enrichment scenario for what concerns the abundances of oxygen, aluminum,
fluorine and magnesium. The question of sodium is more tricky, due to the large
uncertainties of the cross-sections of the Ne-Na cycle. The present results
show that only a relatively small range of initial masses (M=5,6 solar masses)
can be responsible for the self enrichment.


title:
Pac-Bayesian Supervised Classification: The Thermodynamics of
  Statistical Learning

abstract:
  This monograph deals with adaptive supervised classification, using tools
borrowed from statistical mechanics and information theory, stemming from the
PACBayesian approach pioneered by David McAllester and applied to a conception
of statistical learning theory forged by Vladimir Vapnik. Using convex analysis
on the set of posterior probability measures, we show how to get local measures
of the complexity of the classification model involving the relative entropy of
posterior distributions with respect to Gibbs posterior measures. We then
discuss relative bounds, comparing the generalization error of two
classification rules, showing how the margin assumption of Mammen and Tsybakov
can be replaced with some empirical measure of the covariance structure of the
classification model.We show how to associate to any posterior distribution an
effective temperature relating it to the Gibbs prior distribution with the same
level of expected error rate, and how to estimate this effective temperature
from data, resulting in an estimator whose expected error rate converges
according to the best possible power of the sample size adaptively under any
margin and parametric complexity assumptions. We describe and study an
alternative selection scheme based on relative bounds between estimators, and
present a two step localization technique which can handle the selection of a
parametric model from a family of those. We show how to extend systematically
all the results obtained in the inductive setting to transductive learning, and
use this to improve Vapnik's generalization bounds, extending them to the case
when the sample is made of independent non-identically distributed pairs of
patterns and labels. Finally we review briefly the construction of Support
Vector Machines and show how to derive generalization bounds for them,
measuring the complexity either through the number of support vectors or
through the value of the transductive or inductive margin.


title: ECSS in the eXtreme

abstract:
  The ESAC Gaia team engages in a form of eXtreme programming while the DPAC
will follow a series of six month development cycles modeled on this approach.
As a project within the European Space Agency the European Committee for Space
Standardization (ECSS) standards are required. We present the bringing together
of these realms.


title: Small overlap monoids: the word problem

abstract:
  We develop a combinatorial approach to the study of semigroups and monoids
with finite presentations satisfying small overlap conditions. In contrast to
existing geometric methods, our approach facilitates a sequential left-right
analysis of words which lends itself to the development of practical, efficient
computational algorithms. In particular, we obtain a highly practical linear
time solution to the word problem for monoids and semigroups with finite
presentations satisfying the condition C(4), and a polynomial time solution to
the uniform word problem for presentations satisfying the same condition.


title:
Duality, Magnetic space group and their applications to quantum phases
  and phase transitions on bipartite lattices in several experimental systems

abstract:
  By using a dual vortex method, we study phases such as superfluid, solids,
supersolids and quantum phase transitions in a unified scheme in extended boson
Hubbard models at and slightly away from half filling on bipartite optical
lattices such as honeycomb and square lattice. We also map out its global phase
diagram at $ T=0 $ of chemical potential versus the ratio of kinetic energy
over the interaction. We stress the importance of the self-consistence
condition on the saddle point structure of the dual gauge fields in the
translational symmetry breaking insulating sides, especially in the charge
density wave side. We find that in the translational symmetry breaking side,
different kinds of supersolids are generic possible states slightly away from
half filling. We propose a new kind of supersolid: valence bond supersolid
(VB-SS). In this VB-SS, the density fluctuation at any site is very large
indicating its superfluid nature, but the boson kinetic energies on bonds
between two sites are given and break the lattice translational symmetries
indicating its valence bound nature. Implications on possible future QMC
simulations in both bipartite lattices are given. All these phases and phase
transitions can be potentially realized in ultra-cold atoms loaded on optical
bipartite lattices.

categories: cond-mat.stat-mech cond-mat.str-el math-ph math.MP


title:
Structure properties of ${}^{226}$Th and ${}^{256,258,260}$Fm fission
  fragments: mean field analysis with the Gogny force

abstract:
  The constrained Hartree-Fock-Bogoliubov method is used with the Gogny
interaction D1S to calculate potential energy surfaces of fissioning nuclei
${}^{226}$Th and ${}^{256,258,260}$Fm up to very large deformations. The
constraints employed are the mass quadrupole and octupole moments. In this
subspace of collective coordinates, many scission configurations are identified
ranging from symmetric to highly asymmetric fragmentations. Corresponding
fragment properties at scission are derived yielding fragment deformations,
deformation energies, energy partitioning, neutron binding energies at
scission, neutron multiplicities, charge polarization and total fragment
kinetic energies.


title: Dark Energy and Dark Matter, Mirror World and E_6 Unification

abstract:
  In the present talk we have developed a concept of parallel ordinary (O) and
mirror (M) worlds. We have shown that in the case of a broken mirror parity
(MP), the evolutions of fine structure constants in the O- and M-worlds are not
identical. It is assumed that E_6-unification inspired by superstring theory
restores the broken MP at the scale \sim 10^{18} GeV, what unavoidably leads to
the different E_6-breakdowns at this scale: E_6 \to SO(10)\times U(1)_Z - in
the O-world, and E'_6 \to SU(6)'\times SU(2)'_Z - in the M-world. Considering
only asymptotically free theories, we have presented the running of all the
inverse gauge constants \alpha_i^{-1} in the one-loop approximation. Then a
`quintessence' scenario is discussed for the model of accelerating universe.
Such a scenario is related with an axion (`acceleron') of a new gauge group
SU(2)'_Z which has a coupling constant g_Z extremely growing at the scale
\Lambda_Z\sim 10^{-3} eV.


title: Diquark effects in light baryon correlators from lattice QCD

abstract:
  We study the role of diquarks in light baryons through point to point baryon
correlators. We contrast results from quenched simulations with ones with two
flavors of dynamical overlap fermions. The scalar, pseudoscalar and axial
vector diquarks are combined with light quarks to form color singlets. The
quenched simulation shows large zero mode effects in correlators containing the
scalar and pseudoscalar diquark. The two scalar diquarks created by gamma_5 and
gamma_0gamma_5 lead to different behavior in baryon correlators, showing that
the interaction of diquarks with the third light quark matters: we do not see
an isolated diquark. In our quark mass range, the scalar diquark created by
gamma_5 seems to play a greater role than the others.


title: Confined nanorods: jamming due to helical buckling

abstract:
  We investigate a longitudinally loaded elastic nanorod inside a cylindrical
channel and show within the context of classical elasticity theory that the
Euler buckling instability leads to a helical postbuckling form of the rod
within the channel. The local pitch of the confined helix changes along the
channel and so does the longitudinal force transmitted along the rod,
diminishing away from the loaded end. This creates a possibility of jamming of
the nanorod within the channel.


title:
Hamiltonian Design in Atom-Light Interactions with Rubidium Ensembles: A
  Quantum Information Toolbox

abstract:
  We study the coupling between collective variables of atomic spin and light
polarization in an ensemble of cold 87Rb probed with polarized light. The
effects of multiple hyperfine levels manifest themselves as a rank-2 tensor
polarizability, whose irreducible components can be selected by means of probe
detuning. The D1 and D2 lines of Rb are explored and we identify different
detunings which lead to Hamiltonians with different symmetries for rotations.
As possible applications of these Hamiltonians, we describe schemes for spin
squeezing, quantum cloning, quantum memory, and measuring atom number.


title:
Contributions from SUSY-FCNC couplings to the interpretation of the
  HyperCP events for the decay \Sigma^+ \to p \mu^+ \mu^-

abstract:
  The observation of three events for the decay $\Sigma^+ \to p \mu^+ \mu^-$
with a dimuon invariant mass of $214.3\pm0.5$MeV by the HyperCP collaboration
imply that a new particle X may be needed to explain the observed dimuon
invariant mass distribution. We show that there are regions in the SUSY-FCNC
parameter space where the $A^0_1$ in the NMSSM can be used to explain the
HyperCP events without contradicting all the existing constraints from the
measurements of the kaon decays, and the constraints from the $K^0-\bar{K}^0$
mixing are automatically satisfied once the constraints from kaon decays are
satisfied.


title: Extragalactic sources towards the central region of the Galaxy

abstract:
  We have observed a sample of 64 small diameter sources towards the central -6
degree < l< 6 degree, -2 degree < b < 2 degree of the Galaxy with the aim of
studying the Faraday rotation measure near the Galactic Centre (GC) region. All
the sources were observed at 6 and 3.6 cm wavelengths using the ATCA and the
VLA. Fifty nine of these sources are inferred to be extragalactic. The
observations presented here constitute the first systematic study of the radio
polarisation properties of the background sources towards this direction and
increases the number of known extragalactic radio sources in this part of the
sky by almost an order of magnitude. Based on the morphology, spectral indices
and lack of polarised emission, we identify four Galactic HII regions in the
sample.


title: Photo-Emission of a Single-Electron Wave-Packet in a Strong Laser Field

abstract:
  The radiation emitted by a single-electron wave packet in an intense laser
field is considered. A relation between the exact quantum formulation and its
classical counterpart is established via the electron's Wigner function. In
particular we show that the wave packet, even when it spreads to the scale of
the wavelength of the driving laser field, cannot be treated as an extended
classical charge distribution but rather behaves as a point-like emitter
carrying information on its initial quantum state. We outline an experimental
setup dedicated to put this conclusion to the test.


title: Die lokale Struktur von T-Dualit\"atstripeln

abstract:
  We show that the $C^*$-algebraic approach to T-duality of Mathai and
Rosenberg is equivalent to the topological approach of Bunke and Schick.


title: Koszul complexes and fully faithful integral functors

abstract:
  We characterise those objects in the derived category of a scheme which are a
sheaf supported on a closed subscheme in terms of Koszul complexes. This is
applied to generalize to arbitrary schemes the fully faithfullness criteria of
an integral functor.


title:
The XMM-LSS cluster sample and its cosmological applications. Prospects
  for the XMM next decade

abstract:
  The well defined selection function of the XMM-LSS survey enables a
simultaneous modelling of the observed cluster number counts and of the
evolution of the L-T relation. We present results pertaining to the first 5
deg2 for a well controlled sample comprising 30 objects: they are compatible
with the WMAP3 parameter set along with cluster self-similar evolution.
Extending such a survey to 200 deg2 would (1) allow discriminating between the
major scenarios of the cluster L-T evolution and (2) provide a unique
self-sufficient determination of sigma8 and Gamma with an accuracy of ~ 5% and
10% respectively, when adding mass information from weak lensing and S-Z
observations.


title:
Exact bulk correlation functions in one-dimensional nonadditive
  hard-core mixtures

abstract:
  In a recent paper [Phys. Rev. E \textbf{76}, 031202 (2007)], Schmidt has
proposed a Fundamental Measure Density Functional Theory for one-dimensional
nonadditive hard-rod fluid mixtures and has compared its predictions for the
bulk structural properties with Monte Carlo simulations. The aim of this Brief
Report is to recall that the problem admits an exact solution in the bulk,
which is briefly summarized in a self-contained way.


title:
Nanoelectromechanical systems based on multi-walled nanotubes:
  nanothermometer, nanorelay and nanoactuator

abstract:
  We report on three new types of nanoelectromechanical systems based on carbon
nanotubes: an electromechanical nanothermometer, a nanorelay and a nanomotor.
The nanothermometer can be used for accurate temperature measurements in
spatially localized regions with dimensions of several hundred nanometers. The
nanorelay is a prototype of a memory cell, and the nanoactuator can be used for
transformation of the forward force into the relative rotation of the walls.
Relative motion of the walls in these nanosystems is defined by the shape of
the interwall interaction energy surface. Ab initio and semi-empirical
calculations have been used to estimate the operational characteristics and
dimensions of these nanosystems.


title:
An Extension of the Classical Gauss Series-product Identity by Fermionic
  Construction of \hat{sl}_n

abstract:
  The main result of this paper is two infinity classes of series-product
identities which is based on classical Gauss identity and two different
interpretations of character formula for irreducible highest weight modules of
affine Lie algebras.


title: Deformation of Brody curves and mean dimension

abstract:
  The main purpose of this paper is to show that ideas of deformation theory
can be applied to "infinite dimensional geometry". We develop the deformation
theory of Brody curves. Brody curve is a kind of holomorphic map from the
complex plane to the projective space. Since the complex plane is not compact,
the parameter space of the deformation can be infinite dimensional. As an
application we prove a lower bound on the mean dimension of the space of Brody
curves.


title:
The uniformly frustrated two-dimensional XY model in the limit of weak
  frustration

abstract:
  We consider the two-dimensional uniformly frustrated XY model in the limit of
small frustration, which is equivalent to an XY system, for instance a
Josephson junction array, in a weak uniform magnetic field applied along a
direction orthogonal to the lattice. We show that the uniform frustration
(equivalently, the magnetic field) destabilizes the line of fixed points which
characterize the critical behaviour of the XY model for T <= T_{KT}, where
T_{KT} is the Kosterlitz-Thouless transition temperature: the system is
paramagnetic at any temperature for sufficiently small frustration. We predict
the critical behaviour of the correlation length and of gauge-invariant
magnetic susceptibilities as the frustration goes to zero. These predictions
are fully confirmed by the numerical simulations.


title:
Exact solution of Schrodinger equation for modified Kratzer's molecular
  potential with the position-dependent mass

abstract:
  Exact solutions of Schrodinger equation are obtained for the modified Kratzer
and the corrected Morse potentials with the position-dependent effective mass.
The bound state energy eigenvalues and the corresponding eigenfunctions are
calculated for any angular momentum for target potentials. Various forms of
point canonical transformations are applied. PACS numbers: 03.65.-w; 03.65.Ge;
12.39.Fd Keywords: Morse potential, Kratzer potential, Position-dependent mass,
Point canonical transformation, Effective mass Schr\"{o}dinger equation.


title:
Magnetic field near the central region of the Galaxy: Rotation measure
  of extragalactic sources

abstract:
  To determine the properties of the Faraday screen and the magnetic field near
the central region of the Galaxy, we measured the Faraday rotation measure (RM)
towards 60 background extragalactic source components through the -6 deg < l <6
deg, -2 deg < b < 2 deg region of the Galaxy using the 4.8 and 8.5 GHz bands of
the ATCA and VLA. Here we use the measured RMs to estimate the systematic and
the random components of the magnetic fields. The measured RMs are found to be
mostly positive for the sample sources in the region. This is consistent with
either a large scale bisymmetric spiral magnetic fields in the Galaxy or with
fields oriented along the central bar of the Galaxy. The outer scale of the RM
fluctuation is found to be about 40 pc, which is much larger than the observed
RM size scales towards the non-thermal filaments (NTFs). The RM structure
function is well-fitted with a power law index of 0.7 +/- 0.1 at length scales
of 0.3 to 100 pc. If Gaussian random processes in the ISM are valid, the power
law index is consistent with a two dimensional Kolmogorov turbulence. If there
is indeed a strong magnetic field within 1 degree (radius 150 pc) from the GC,
the strength of the random field in the region is estimated to be 20
microGauss. Given the highly turbulent magnetoionic ISM in this region, the
strength of the systematic component of the magnetic fields would most likely
be close to that of the random component. This suggests that the earlier
estimated milliGauss magnetic field near the NTFs is localised and does not
pervade the central 300 pc of the Galaxy.


title: Random graphs with forbidden vertex degrees

abstract:
  We study the random graph G_{n,\lambda/n} conditioned on the event that all
vertex degrees lie in some given subset S of the non-negative integers. Subject
to a certain hypothesis on S, the empirical distribution of the vertex degrees
is asymptotically Poisson with some parameter \mux given as the root of a
certain `characteristic equation' of S that maximises a certain function
\psis(\mu). Subject to a hypothesis on S, we obtain a partial description of
the structure of such a random graph, including a condition for the existence
(or not) of a giant component. The requisite hypothesis is in many cases
benign, and applications are presented to a number of choices for the set S
including the sets of (respectively) even and odd numbers. The random
\emph{even} graph is related to the random-cluster model on the complete graph
K_n.


title: Distributed Arithmetic Coding for the Asymmetric Slepian-Wolf problem

abstract:
  Distributed source coding schemes are typically based on the use of channels
codes as source codes. In this paper we propose a new paradigm, termed
"distributed arithmetic coding", which exploits the fact that arithmetic codes
are good source as well as channel codes. In particular, we propose a
distributed binary arithmetic coder for Slepian-Wolf coding with decoder side
information, along with a soft joint decoder. The proposed scheme provides
several advantages over existing Slepian-Wolf coders, especially its good
performance at small block lengths, and the ability to incorporate arbitrary
source models in the encoding process, e.g. context-based statistical models.
We have compared the performance of distributed arithmetic coding with turbo
codes and low-density parity-check codes, and found that the proposed approach
has very competitive performance.


title: Instability of scalar perturbation in a phantomic cosmological scenario

abstract:
  Scalar perturbations can grow during a phantomic cosmological phase as the
big rip is approached, in spite of the high accelerated expansion regime, if
the equation of state is such that $\frac{p}{\rho} = \alpha < - {5/3}$. It is
shown that such result is independent of the spatial curvature. The perturbed
equations are exactly solved for any value of the curvature parameter $k$ and
of the equation of state parameter $\alpha$. Growing modes are found
asymptotically under the condition $\alpha < - {5/3}$. Since the Hubble radius
decreases in a phantom universe, such result indicates that a phantom scenario
may not survive longtime due to gravitational instability.


title:
Characteristics of 2D lattice models from fermionic realization: Ising
  and $XYZ$ models

abstract:
  We develop a field theoretical approach to the classical two-dimensional
models, particularly to 2D Ising model (2DIM) and $XYZ$ model, which is simple
to apply for calculation of various correlation functions. We calculate the
partition function of 2DIM and $XY$ model within the developed framework.
Determinant representation of spin-spin correlation functions is derived using
fermionic realization for the Boltzmann weights. The approach also allows
formulation of the partition function of 2DIM in the presence of an external
magnetic field.


title: Ages and metallicities of faint red galaxies in the Shapley Supercluster

abstract:
  We present results on the stellar populations of 232 quiescent galaxies in
the Shapley Supercluster, based on spectroscopy from the AAOmega spectrograph
at the AAT. The key characteristic of this survey is its coverage of many
low-luminosity objects (sigma ~ 50 km/s), with high signal-to-noise (~45 per
Angstrom). Balmer-line age estimates are recovered with ~25% precision even for
the faintest sample members. We summarize the observations and absorption line
data, and present correlations of derived ages and metallicities with mass and
luminosity. We highlight the strong correlation between age and alpha-element
abundance ratio, and the anti-correlation of age and metallicity at fixed mass,
which is shown to extend into the low-luminosity regime.


title: The effect of time distribution shape on simulated epidemic models

abstract:
  By convention, and even more often, as an unintentional consequence of
design, time distributions of latency and infectious durations in stochastic
epidemic simulations are often exponential. The skewed distribtion typically
leads to unrealistically short times. We examine the effects of altering the
distribution latency and infectious times by comparing the key results after
simulation with exponential and gamma distributions in a homogeneous mixing
model aswell as a model with regional divisions connected by a travel intensity
matrix. We show a delay in spread with more realistic latency times and offer
an explanation of the effect.


title: Energy-momentum complexes in f(R) theories of gravity

abstract:
  Despite the fact that modified theories of gravity, in particular the f(R)
gravity models have attracted much attention in the last years, the problem of
the energy localization in the framework of these models has not been
addressed. In the present work the concept of energy-momentum complexes is
presented in this context. We generalize the Landau-Lifshitz prescription of
calculating the energy-momentum complex to the framework of f(R) gravity. As an
important special case, we explicitly calculate the energy-momentum complex for
the Schwarzschild-de Sitter metric for a general f(R) theory as well as for a
number of specific, popular choices of f(R).


title: The effect of radiation pressure on dusty absorbing gas around AGN

abstract:
  Many Active Galactic Nuclei (AGN) are surrounded by gas which absorbs the
radiation produced by accretion onto the central black hole and obscures the
nucleus from direct view. The dust component of the gas greatly enhances the
effect of radiation pressure above that for Thomson scattering so that an AGN
which is sub-Eddington for ionized gas in the usual sense can appear
super-Eddington for cold dusty gas. The radiation-pressure enhancement factor
depends on the AGN spectrum but ranges between unity and about 500, depending
on the column density. It means that an AGN for which the absorption is
long-lived should have a column density N_H>5x10^23 lambda cm^-2, where lambda
is its Eddington fraction L_bol/L_Edd, provided that N_H}>5x10^21 cm^-2. We
have compared the distribution of several samples of AGN - local, CDFS and
Lockman Hole - with this expectation and find good agreement. We show that the
limiting enhancement factor can explain the black hole mass - bulge mass
relation and note that the effect of radiation pressure on dusty gas may be a
key component in the feedback of momentum and energy from a central black hole
to a galaxy.


title: Entropy Rate of Diffusion Processes on Complex Networks

abstract:
  The concept of entropy rate for a dynamical process on a graph is introduced.
We study diffusion processes where the node degrees are used as a local
information by the random walkers. We describe analitically and numerically how
the degree heterogeneity and correlations affect the diffusion entropy rate. In
addition, the entropy rate is used to characterize complex networks from the
real world. Our results point out how to design optimal diffusion processes
that maximize the entropy for a given network structure, providing a new
theoretical tool with applications to social, technological and communication
networks.


title:
Heisenberg modules over real multiplication noncommutative tori and
  related algebraic structures

abstract:
  We review some aspects of the theory of noncommutative two-tori with real
multiplication focusing on the role played by Heisenberg groups in the
definition of algebraic structures associated to these noncommutative spaces.


title:
Suzaku X-Ray Spectroscopy of a Peculiar Hot Star in the Galactic Center
  Region

abstract:
  We present the results of a Suzaku study of a bright point-like source in the
6.7 keV intensity map of the Galactic center region. We detected an intense
FeXXV 6.7 keV line with an equivalent width of ~1 keV as well as emission lines
of highly ionized Ar and Ca from a spectrum obtained by the X-ray Imaging
Spectrometer. The overall spectrum is described very well by a heavily absorbed
(~2x10^{23}cm^{-2}) thin thermal plasma model with a temperature of 3.8+/-0.6
keV and a luminosity of ~3x10^{34} erg s^{-1} (2.0--8.0 keV) at 8 kpc. The
absorption, temperature, luminosity, and the 6.7 keV line intensity were
confirmed with the archived XMM-Newton data. The source has a very red
(J-Ks=8.2 mag) infrared spectral energy distribution (SED), which was fitted by
a blackbody emission of ~1000 K attenuated by a visual extinction of ~31 mag.
The high plasma temperature and the large X-ray luminosity are consistent with
a wind-wind colliding Wolf-Rayet binary. The similarity of the SED to those of
the eponymous Quintuplet cluster members suggests that the source is a WC-type
source.


title: Results and Perspectives of Young Stellar Object long look programs

abstract:
  Both Chandra and XMM-Newton have performed long look programs for studying
the YSO physics. I will discuss recent results on the controversial issue of
Class 0 YSO X-ray emission, the observational evidence of magnetic funnels
interconnecting the YSO with its circumstellar disk and the Fe 6.4 keV
fluorescent line emission and its origin. While recent results of the
XMM-Newton DROXO program challenge the ''standard'' interpretation of the Fe
6.4 line origin as due to photoionized fluorescing disk material, the discovery
of X-ray excited Ne 12.81 micron line is a clear evidence of the interaction
between X-rays and disk material. Future long look observations with XMM-Newton
are required to clarify the X-ray effects on YSO disk.


title:
On the automorphism groups of q-enveloping algebras of nilpotent Lie
  algebras

abstract:
  We investigate the automorphism group of the quantised enveloping algebra U
of the positive nilpotent part of certain simple complex Lie algebras g in the
case where the deformation parameter q \in \mathbb{C}^* is not a root of unity.
Studying its action on the set of minimal primitive ideals of U we compute this
group in the cases where g=sl_3 and g=so_5 confirming a Conjecture of
Andruskiewitsch and Dumas regarding the automorphism group of U. In the case
where g=sl_3, we retrieve the description of the automorphism group of the
quantum Heisenberg algebra that was obtained independently by Alev and Dumas,
and Caldero. In the case where g=so_5, the automorphism group of U was computed
in [16] by using previous results of Andruskiewitsch and Dumas. In this paper,
we give a new (simpler) proof of the Conjecture of Andruskiewitsch and Dumas in
the case where g=so_5 based both on the original proof and on graded arguments
developed in [17] and [18].


title:
Wavelet methods in statistics: Some recent developments and their
  applications

abstract:
  The development of wavelet theory has in recent years spawned applications in
signal processing, in fast algorithms for integral transforms, and in image and
function representation methods. This last application has stimulated interest
in wavelet applications to statistics and to the analysis of experimental data,
with many successes in the efficient analysis, processing, and compression of
noisy signals and images. This is a selective review article that attempts to
synthesize some recent work on ``nonlinear'' wavelet methods in nonparametric
curve estimation and their role on a variety of applications. After a short
introduction to wavelet theory, we discuss in detail several wavelet shrinkage
and wavelet thresholding estimators, scattered in the literature and developed,
under more or less standard settings, for density estimation from i.i.d.
observations or to denoise data modeled as observations of a signal with
additive noise. Most of these methods are fitted into the general concept of
regularization with appropriately chosen penalty functions. A narrow range of
applications in major areas of statistics is also discussed such as partial
linear regression models and functional index models. The usefulness of all
these methods are illustrated by means of simulations and practical examples.


title:
Kinetics of stimulated polariton scattering in planar microcavities:
  Evidence for a dynamically self-organized optical parametric oscillator

abstract:
  We demonstrate for the first time the strong temporal hysteresis effects in
the kinetics of the pumped and scattered polariton populations in a planar
semiconductor microcavity under a nano-second-long pulsed resonant (by
frequency and angle) excitation above the lower polariton branch. The
hysteresis effects are explained in the model of multi-mode scattering when the
bistability of the nonlinear pumped polariton is accompanied by the explosive
growth of the scattered polaritons population. Subsequent self-organization
process in the nonlinear polariton system results in a new -- dynamically
self-organized -- type of optical parametric oscillator.


title:
Forgetting of the initial condition for the filter in general
  state-space hidden Markov chain: a coupling approach

abstract:
  We give simple conditions that ensure exponential forgetting of the initial
conditions of the filter for general state-space hidden Markov chain. The
proofs are based on the coupling argument applied to the posterior Markov
kernels. These results are useful both for filtering hidden Markov models using
approximation methods (e.g., particle filters) and for proving asymptotic
properties of estimators. The results are general enough to cover models like
the Gaussian state space model, without using the special structure that
permits the application of the Kalman filter.


title: In-plane magnetic field phase diagram of superconducting Sr2RuO4

abstract:
  We develop the Ginzburg - Landau theory of the upper critical field in the
basal plane of a tetragonal multiband metal in two-component superconducting
state. It is shown that typical for the two component superconducting state the
upper critical field basal plane anisotropy and the phase transition splitting
still exist in a multiband case. However, the value of anisotropy can be
effectively smaller than in the single band case. The results are discussed in
the application to the superconducting Sr2RuO4.


title:
Hadronic production of top-squark pairs with electroweak NLO
  contributions

abstract:
  Presented are complete next-to-leading order electroweak (NLO EW) corrections
to top-squark pair production at the Large Hadron Collider (LHC) within the
Minimal Supersymmetric Standard Model (MSSM). At this order, also effects from
the interference of EW and QCD contributions have to be taken into account.
Moreover, photon-induced top-squark production is considered as an additional
partonic channel, which arises from the non-zero photon density in the proton.


title:
Gemini GMOS IFU Spectroscopy of IRAS 04505-2958: A New Exploding BAL +
  IR + Fe II QSO

abstract:
  New results of a Programme of study of BAL + IR + Fe II QSOs (at low and high
redshift) are presented. Which are based mainly on deep Gemini GMOS integral
field unit (IFU/3D) spectroscopy. We have performed a detailed study of the
kinematics, morphological, and physical conditions, in the BAL + IR + Fe II
QSO: IRAS 04505-2958. From this study, some selected results are presented,
mainly for the 3 expanding giant shells (observed with Gemini). In particular,
the GMOS data suggest that the outflow (OF) process -in this IR QSO- generated
multiple expanding hypergiant shells (from 10, to 100 kpc), in several extreme
explosive events. These new Gemini GMOS data are in good agreement with our
evolutionary, explosive and composite Model: where part of the ISM of the host
galaxy is ejected in the form of multiple giant shells, mainly by HyN
explosions. This process could generate satellite/companion galaxies, and even
could expel a high fraction -or all- the host galaxy. In addition, this Model
for AGN could give important clue about the physical processes that could
explain the origin -in AGNs- of very energetic cosmic rays, detected by the P.
Auger Observatory.


title:
Triggering of merger-induced starbursts by the tidal field of galaxy
  groups and clusters

abstract:
  Star formation in galaxies is for a part driven by galaxy mergers. At low
redshift, star formation activity is low in high-density environments like
groups and clusters, and the star formation activity of galaxies increases with
their isolation. This star formation-density relation is observed to be
reversed at z~1, which is not explained by theoretical models so far. We study
the influence of the tidal field of a galaxy group or cluster on the star
formation activity of merging galaxies, using N-body simulations including gas
dynamics and star formation. We find that the merger-driven star formation is
significantly more active in the vicinity of such cosmological structures
compared to mergers in the field. The large-scale tidal field can thus enhance
the activity of galaxies in dense cosmic structures, and should be particularly
efficient at high redshift before quenching processes take effect in the
densest regions.


title: Predicting the Growth of Two-Dimensional Nanostructures

abstract:
  The ability to predict the morphology of crystals formed by chemical
reactions is of fundamental importance for the shape-controlled synthesis of
nanostructures. Based on the atomistic mechanism for crystal growth under
different driving forces, we have developed morphology diagrams to predict
regimes for the growth of two-dimensional crystals. By using controlled
reactions for crystal growth in the absence of surfactants/capping agents, we
demonstrate the validity of this approach for the formation of 2-D structures
of Au, Ag, Pt, Pd and hydroxyapatite.


title:
A proof for the informational completeness of the rotated quadrature
  observables

abstract:
  We give a new mathematically rigorous proof for the fact that, when $S$ is a
dense subset of $[0,2\pi)$, the rotated quadrature operators $Q_\theta$,
$\theta\in S$, of a single mode electromagnetic field constitute an
informationally complete set of observables.


title: An algorithm for evaluating the Gamma function and ramifications

abstract:
  We provide a new algorithm for evaluating the gamma function at any
(rational) point and a new infinite product representation free from the
presence of Euler and Mascheroni constant.Formulae and inequalities seemingly
new are obtained as byproducts of the method.


title: Statistical physics for cosmic structures

abstract:
  The recent observations of galaxy and dark matter clumpy distributions have
provided new elements to the understating of the problem of cosmological
structure formation. The strong clumpiness characterizing galaxy structures
seems to be present in the overall mass distribution and its relation to the
highly isotropic Cosmic Microwave Background Radiation represents a fundamental
problem. The extension of structures, the formation of power-law correlations
characterizing the strongly clustered regime and the relation between dark and
visible matter are the key problems both from an observational and a
theoretical point of view. We discuss recent progresses in the studies of
structure formation by using concepts and methods of statistical physics.


title: The NUGA project: The Seyfert 2 galaxy NGC3147

abstract:
  We present CO(1-0) and CO(2-1) maps of the Seyfert 2 galaxy NGC3147 of the
NUclei of GAlaxies (NUGA) sample at 1.8'' x 1.6'' and 1.4'' x 1.2'' resolution
respectively. Identifying the presence of a bar in NGC3147 we also compute the
gravity torques exerted from the stellar bar on the gas.


title:
Liapunov's direct method for Birkhoffian systems: Applications to
  electrical networks

abstract:
  In this paper, the concepts and the direct theorems of stability in the sense
of Liapunov, within the framework of Birkhoffian dynamical systems on
manifolds, are considered. The Liapunov-type functions are constructed for
linear and nonlinear LC and RLC electrical networks, to prove stability under
certain conditions.


title: Failure of mean-field approach in out-of-equilibrium Anderson model

abstract:
  To explore the limitations of the mean field approximation, frequently used
in \textit{ab initio} molecular electronics calculations, we study an
out-of-equilibrium Anderson impurity model in a scattering formalism. We find
regions in the parameter space where both magnetic and non-magnetic solutions
are stable. We also observe a hysteresis in the non-equilibrium magnetization
and current as a function of the applied bias voltage. The mean field method
also predicts incorrectly local moment formation for large biases and a spin
polarized current, and unphysical kinks appear in various physical quantities.
The mean field approximation thus fails in every region where it predicts local
moment formation.


title: Lower bounds on the squashed entanglement for multi-party systems

abstract:
  Squashed entanglement is a promising entanglement measure that can be
generalized to multipartite case, and it has all of the desirable properties
for a good entanglement measure. In this paper we present computable lower
bounds to evaluate the multipartite squashed entanglement. We also derive some
inequalities relating the squashed entanglement to the other entanglement
measure.


title: Nuclear physics inputs needed for geo-neutrino studies

abstract:
  Geo-neutrino studies are based on theoretical estimates of geo-neutrino
spectra. We propose a method for a direct measurement of the energy
distribution of antineutrinos from decays of long-lived radioactive isotopes.


title:
Azimuthal asymmetry of direct photons in intermediate energy heavy-ion
  collisions

abstract:
  Hard photon emitted from energetic heavy ion collisions is of very
interesting since it does not experience the late-stage nuclear interaction,
therefore it is useful to explore the early-stage information of matter phase.
In this work, we have presented a first calculation of azimuthal asymmetry,
characterized by directed transverse flow parameter $F$ and elliptic asymmetry
coefficient $v_2$, for proton-neutron bremsstrahlung hard photons in
intermediate energy heavy-ion collisions. The positive $F$ and negative $v_2$
of direct photons are illustrated and they seem to be anti-correlated to the
corresponding free proton's flow.


title: Semiclassical decay of topological defects

abstract:
  Perturbative estimates suggest that extended topological defects such as
cosmic strings emit few particles, but numerical simulations of the fields from
which they are constructed suggest the opposite. In this paper we study the
decay of the two-dimensional prototype of strings, domain walls in a simple
scalar theory, solving the underlying quantum field theory in the Hartree
approximation. We conclude that including the quantum effects makes the picture
clear: the defects do not directly transform into particles, but there is a
non-perturbative channel to microscopic classical structures in the form of
propagating waves and persistent localised oscillations, which operates over a
huge separation of scales. When quantum effects are included, the microscopic
classical structures can decay into particles.


title:
An infrared view of (candidate accretion) disks around massive young
  stars

abstract:
  Near-infrared surveys of high-mass star-forming regions start to shed light
onto their stellar content. A particular class of objects found in these
regions, the so-called massive Young Stellar Objects (YSOs) are surrounded by
dense circumstellar material. Several near- and mid-infrared diagnostic tools
are used to infer the physical characteristics and geometry of this
circumstellar matter. Near-infrared hydrogen emission lines provide evidence
for a disk-wind. The profiles of the first overtone of the CO band-heads,
originating in the inner 10 AU from the central star, are well fitted assuming
a keplerian rotating disk. The mid-infrared spectral energy distribution
requires the presence of a more extended envelope containing dust at a
temperature of about 200 K. CRIRES observations of CO fundamental absorption
lines confirm the presence of a cold envelope. We discuss the evolutionary
status of these objects.


title:
Hilbert fluid dynamics equations expressed in Chapman-Enskog pressure
  tensor and heat current

abstract:
  The connection between the Chapman-Enskog and Hilbert expansions is
investigated in detail. In particular the fluid dynamics equations of any order
in the Hilbert expansion are given in terms of the pressure tensor and heat
current of the Chapman-Enskog expansion


title:
Baryon-Strangeness correlations in Parton/Hadron transport model for Au
  + Au collisions at \sqrt{s_{NN}} = 200 GeV

abstract:
  Baryon-strangeness correlation (C$_{BS}$) has been investigated with a
multi-phase transport model (AMPT) in $^{197}$Au + $^{197}$Au collisions at
$\sqrt{s_{NN}}$ = 200 GeV. The centrality dependence of C$_{BS}$ is presented
within the model, from partonic phase to hadronic matter. We find that the
system still reserve partial predicted signatures of C$_{BS}$ after parton
coalescence. But after hadronic rescattering, the predicted signatures will be
obliterated completely. So it seems that both coalescence hadronization process
and hadronic rescattering are responsible for the disappearance of the C$_{BS}$
signatures.


title:
The decay \phi -> f_0(980) \gamma and the process e^+e^- -> \phi
  f_0(980)

abstract:
  The decay \phi -> f_0(980) \gamma and process e^+e^- -> \phi f_0(980) are
considered within the local Nambu-Jona-Lasinio model. In the amplitudes of
these processes contributions of s-quark and kaon loops are taken into account.
The kaon loop gives a dominant contribution. Our estimation for the decay width
of \phi -> f_0 \gamma is in satisfactory agreement with recent experimental
data. This allows us to make some predictions for cross sections of the process
e^+e^- -> \gamma^* -> \phi f_0 which can be tested in the C-\tau factory. The
total and differential cross sections of this process are calculated and
presented in the figures.


title:
The analytic computability of the Shannon transform for a large class of
  random matrix channels

abstract:
  We define a class of "algebraic" random matrix channels for which one can
generically compute the limiting Shannon transform using numerical techniques
and often enumerate the low SNR series expansion coefficients in closed form.
We describe this class, the coefficient enumeration techniques and compare
theory with simulations.


title: Constrained BSDE and Viscosity Solutions of Variation Inequalities

abstract:
  In this paper, we study the relation between the smallest $g$-supersolution
of constraint backward stochastic differential equation and viscosity solution
of constraint semilineare parabolic PDE, i.e. variation inequalities. And we
get an existence result of variation inequalities via constraint BSDE, and
prove a uniqueness result under certain condition.


title: Quantum Hamilton-Jacobi Theory

abstract:
  Quantum canonical transformations have attracted interest since the beginning
of quantum theory. Based on their classical analogues, one would expect them to
provide a powerful quantum tool. However, the difficulty of solving a nonlinear
operator partial differential equation such as the quantum Hamilton-Jacobi
equation (QHJE) has hindered progress along this otherwise promising avenue. We
overcome this difficulty. We show that solutions to the QHJE can be constructed
by a simple prescription starting from the propagator of the associated
Schroedinger equation. Our result opens the possibility of practical use of
quantum Hamilton-Jacobi theory. As an application we develop a surprising
relation between operator ordering and the density of paths around a
semiclassical trajectory.


title: Current reversal in collective ratchets induced by lattice instability

abstract:
  A collective mechanism for current reversal in superconducting vortex
ratchets is proposed. The mechanism is based on a two-dimensional instability
of the ground state (T=0) of the system. We illustrate our results with
numerical simulations and experiments in Nb superconducting films fabricated on
top of Si substrates with artificially induced asymmetric pinning centers.


title: Recovery of the internal orbital structure of galaxies

abstract:
  We construct axisymmetric and triaxial galaxy models with a phase-space
distribution function that depends on linear combinations of the three exact
integrals of motion for a separable potential. These Abel models, first
introduced by Dejonghe & Laurent and subsequently extended by Mathieu &
Dejonghe, are the axisymmetric and triaxial generalisations of the well-known
spherical Osipkov-Merritt models. We show that the density and higher order
velocity moments, as well as the line-of-sight velocity distribution (LOSVD) of
these models can be calculated efficiently and that they capture much of the
rich internal dynamics of early-type galaxies. We build a triaxial and oblate
axisymmetric galaxy model with projected kinematics that mimic the
two-dimensional kinematic observations that are obtained with integral-field
spectrographs such as SAURON. We fit the simulated observations with
axisymmetric and triaxial dynamical models constructed with our numerical
implementation of Schwarzschild's orbit-superposition method. We find that
Schwarzschild's method is able to recover the internal dynamics and
three-integral distribution function of realistic models of early-type
galaxies.


title: Heavy flavor baryons

abstract: We review the new results on the heavy flavor baryons and on the pentaquarks.


title:
Exploring the growth of correlations in a quasi one-dimensional trapped
  Bose gas

abstract:
  Phase correlations, density fluctuations and three-body loss rates are
relevant for many experiments in quasi one-dimensional geometries. Extended
mean-field theory is used to evaluate correlation functions up to third order
for a quasi one-dimensional trapped Bose gas at zero and finite temperature. At
zero temperature and in the homogeneous limit, we also study the transition
from the weakly correlated Gross-Pitaevskii regime to the strongly correlated
Tonks-Girardeau regime analytically. We compare our results with the exact
Lieb-Liniger solution for the homogeneous case and find good agreement up to
the cross-over regime.


title:
Mean-field behavior for long- and finite range Ising model, percolation
  and self-avoiding walk

abstract:
  We consider self-avoiding walk, percolation and the Ising model with long and
finite range. By means of the lace expansion we prove mean-field behavior for
these models if $d>2(\alpha\wedge2)$ for self-avoiding walk and the Ising
model, and $d>3(\alpha\wedge2)$ for percolation, where $d$ denotes the
dimension and $\alpha$ the power-law decay exponent of the coupling function.
We provide a simplified analysis of the lace expansion based on the
trigonometric approach in Borgs et al. (2007)


title:
Hiatus perturbation for a singular Schr\"odinger operator with an
  interaction supported by a curve in \mathbb{R}^3

abstract:
  We consider Schr\"odinger operators in $L^2(\mathbb{R}^3)$ with a singular
interaction supported by a finite curve $\Gamma$. We present a proper
definition of the operators and study their properties, in particular, we show
that the discrete spectrum can be empty if $\Gamma$ is short enough. If it is
not the case, we investigate properties of the eigenvalues in the situation
when the curve has a hiatus of length $2\epsilon$. We derive an asymptotic
expansion with the leading term which a multiple of $\epsilon \ln\epsilon$.


title: The Phase Diagram GdF3-LuF3

abstract:
  The phase diagram gadolinium fluoride - lutetium fluoride was determined by
differential scanning calorimetry (DSC) and X-ray powder diffraction analysis.
Both pure components undergo a reversible first order transformation to a high
temperature phase. The mutual solubility of both components is unlimited in the
orthorhombic room temperature phase. The maximum solubility of Lu in the high
temperature phase of GdF3 (tysonite type) is about 20% and the maximum
solubility of Gd in LuF3 ($\alpha$-YF3 type) is about 40%. Intermediate
compositions of the low temperature phase decompose upon heating in a
peritectoid reaction to a mixture of both high temperature phases.


title: Very-High Energy Gamma Astrophysics

abstract:
  High-energy photons are a powerful probe for astrophysics and for fundamental
physics under extreme conditions. During the recent years, our knowledge of the
most violent phenomena in the Universe has impressively progressed thanks to
the advent of new detectors for high-energy gamma-rays. Observation of
gamma-rays gives an exciting view of the high-energy universe thanks to
satellite-based telescopes (AGILE, GLAST) and to ground-based detectors like
the Cherenkov telescopes (H.E.S.S. and MAGIC in particular), which recently
discovered more than 60 new very-high-energy sources. The progress achieved
with the last generation of Cherenkov telescopes is comparable to the one drawn
by EGRET with respect to the previous gamma-ray satellite detectors. This
article reviews the present status of high-energy gamma astrophysics, with
emphasis on the recent results and on the experimental developments.


title:
Kaon production at subthreshold energies - what do we learn about the
  nuclear medium ?

abstract:
  The Isospin Quantum Molecular Dynamics model is used to compare spectra and
elliptic flow of kaons produced at subthreshold energies with data taken at the
SIS accelerator at GSI. We find that temperatures of the spectra are dominated
by the rescattering of the kaons. The study of elliptic flow observables
indicates the influence of rescattering as well as of the optical potential of
the kaons with increasing dominance of the optical potential at lower incident
energies.


title:
Identified Particle Correlations at RHIC: Medium Interactions & Modified
  Fragmentation

abstract:
  Azimuthal angle two particle correlations have been shown to be a powerful
probe for extracting novel features of jet induced correlations produced in
Au+Au collisions at RHIC. At intermediate $p_T$, 2-5GeV/c, the jets have been
shown to be significantly modified in both their particle composition and their
angular distribution compared to p+p collisions. Two-particle angular
correlations with identified particles provide sensitive probes of both the
interactions between hard scattered partons and the medium. The systematics of
these correlations are essential to understanding the physics of intermediate
$p_T$ in heavy ion collisions.


title:
The TTF finite-energy spectral features in photoemission of TTF-TCNQ:
  The Hubbard-chain description

abstract:
  A dynamical theory which accounts for all microscopic one-electron processes
is used to study the spectral function of the 1D Hubbard model for the whole
$(k, \omega)$-plane, beyond previous studies which focused on the weight
distribution in the vicinity of the singular branch lines only. While our
predictions agree with those of the latter studies concerning the
tetracyanoquinodimethane (TCNQ) related singular features in photoemission of
the organic compound tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ)
metallic phase, the generalized theory also leads to quantitative agreement
concerning the tetrathiafulvalene (TTF) related finite-energy spectral
features, which are found to correspond to a value of the on-site repulsion $U$
larger than for TCNQ. Our study reveals the microscopic mechanisms behind the
unusual spectral features of TTF-TCNQ and provides a good overall description
of those features for the whole $(k, \omega)$-plane.


title:
A multi-transition HCN and HCO+ study of 12 nearby active galaxies: AGN
  versus SB environments

abstract:
  Recent studies have indicated that the HCN-to-CO(J=1-0) and
HCO+-to-HCN(J=1-0) ratios are significantly different between galaxies with AGN
(active galactic nucleus) and SB (starburst) signatures. In order to study the
molecular gas properties in active galaxies and search for differences between
AGN and SB environments, we observed the HCN(J=1-0), (J=2-1), (J=3-2),
HCO+(J=1-0) and HCO+(J=3-2), emission with the IRAM 30m in the centre of 12
nearby active galaxies which either exhibit nuclear SB and/or AGN signatures.
Consistent with previous results, we find a significant difference of the
HCN(J=2-1)-to-HCN(J=1-0), HCN(J=3-2)-to-HCN(J=1-0), HCO+(J=3-2)-to-HCO+(J=3-2),
and HCO+-to-HCN intensity ratios between the sources dominated by an AGN and
those with an additional or pure central SB: the HCN, HCO+ and HCO+-to-HCN
intensity ratios tend to be higher in the galaxies of our sample with a central
SB as opposed to the pure AGN cases which show rather low intensity ratios.
Based on an LVG analysis of these data, i.e., assuming purely collisional
excitation, the (average) molecular gas densities in the SB dominated sources
of our sample seem to be systematically higher than in the AGN sources. The LVG
analysis seems to further support systematically higher HCN and/or lower HCO+
abundances as well as similar or higher gas temperatures in AGN compared to the
SB sources of our sample. Also, we find that the HCN-to-CO ratios decrease with
increasing rotational number J for the AGN while they stay mostly constant for
the SB sources.


title: Multiple-time states and multiple-time measurements in quantum mechanics

abstract:
  We discuss experimental situations that consist of multiple preparation and
measurement stages. This leads us to a new approach to quantum mechanics. In
particular, we introduce the idea of multi-time quantum states which are the
appropriate tools for describing these experimental situations. We also
describe multi-time measurements and discuss their relation to multi-time
states. A consequence of our new formalism is to put states and operators on an
equal footing. Finally we discuss the implications of our new approach to
quantum mechanics for the problem of the flow of time.


title: Difference Problems and Differential Problems

abstract:
  We state some elementary problems concerning the relation between difference
calculus and differential calculus, and we try to convince the reader that, in
spite of the simplicity of the statements, a solution of these problems would
be a significant contribution to the understanding of the foundations of
differential and integral calculus.


title:
Standstill Electric Charge Generates Magnetostatic Field Under
  Born-Infeld Electrodynamics

abstract:
  The Abelian Born-Infeld classical non-linear electrodynamic has been used to
investigate the electric and magnetostatic fields generated by a point-like
electrical charge at rest in an inertial frame. The results show a rich
internal structure for the charge. Analytical solutions have also been found.
Such findings have been interpreted in terms of vacuum polarization and
magnetic-like charges produced by the very high strengths of the electric field
considered. Apparently non-linearity is to be accounted for the emergence of an
anomalous magnetostatic field suggesting a possible connection to that created
by a magnetic dipole composed of two mognetic charges with opposite signals.
Consistently in situations where the Born-Infeld field strength parameter is
free to become infinite, Maxwell`s regime takes over, the magnetic sector
vanishes and the electric field assumes a Coulomb behavior with no trace of a
magnetic component. The connection to other monopole solutions, like Dirac`s,
t' Hooft`s or Poliakov`s types, are also discussed. Finally some speculative
remarks are presented in an attempt to explain such fields.


title: Critical view of WKB decay widths

abstract:
  A detailed comparison of the expressions for the decay widths obtained within
the semiclassical WKB approximation using different approaches to the tunneling
problem is performed. The differences between the available improved formulae
for tunneling near the top and the bottom of the barrier are investigated.
Though the simple WKB method gives the right order of magnitude of the decay
widths, a small number of parameters are often fitted. The need to perform the
fitting procedure remaining consistently within the WKB framework is emphasized
in the context of the fission model based calculations. Calculations for the
decay widths of some recently found super heavy nuclei using microscopic
alpha-nucleus potentials are presented to demonstrate the importance of a
consistent WKB calculation. The half-lives are found to be sensitive to the
density dependence of the nucleon-nucleon interaction and the implementation of
the Bohr-Sommerfeld quantization condition inherent in the WKB approach.


title: Explaining the Pure Spinor Formalism for the Superstring

abstract:
  After adding a pair of non-minimal fields and performing a similarity
transformation, the BRST operator in the pure spinor formalism is expressed as
a conventional-looking BRST operator involving the Virasoro constraint and
(b,c) ghosts, together with 12 fermionic constraints. This BRST operator can be
obtained by gauge-fixing the Green-Schwarz superstring where the 8 first-class
and 8 second-class Green-Schwarz constraints are combined into 12 first-class
constraints. Alternatively, the pure spinor BRST operator can be obtained from
the RNS formalism by twisting the ten spin-half RNS fermions into five spin-one
and five spin-zero fermions, and using the SO(10)/U(5) pure spinor variables to
parameterize the different ways of twisting. GSO(-) vertex operators in the
pure spinor formalism are constructed using spin fields and picture-changing
operators in a manner analogous to Ramond vertex operators in the RNS
formalism.


title:
Dynamics of delayed-coupled chaotic logistic maps: influence of network
  topology, connectivity and delay times

abstract:
  We review our recent work on the synchronization of a network of
delay-coupled maps, focusing on the interplay of the network topology and the
delay times that take into account the finite velocity of propagation of
interactions. We assume that the elements of the network are identical ($N$
logistic maps in the regime where the individual maps, without coupling, evolve
in a chaotic orbit) and that the coupling strengths are uniform throughout the
network. We show that if the delay times are sufficiently heterogeneous, for
adequate coupling strength the network synchronizes in a spatially homogeneous
steady-state, which is unstable for the individual maps without coupling. This
synchronization behavior is referred to as ``suppression of chaos by random
delays'' and is in contrast with the synchronization when all the interaction
delay times are homogeneous, because with homogeneous delays the network
synchronizes in a state where the elements display in-phase time-periodic or
chaotic oscillations. We analyze the influence of the network topology
considering four different types of networks: two regular (a ring-type and a
ring-type with a central node) and two random (free-scale Barabasi-Albert and
small-world Newman-Watts). We find that when the delay times are sufficiently
heterogeneous the synchronization behavior is largely independent of the
network topology but depends on the networks connectivity, i.e., on the average
number of neighbors per node.


title:
Shape transition and propulsive force of an elastic rod rotating in a
  viscous fluid

abstract:
  The deformation of thin rods in a viscous liquid is central to the mechanics
of motility in cells ranging from \textit{Escherichia coli} to sperm. Here we
use experiments and theory to study the shape transition of a flexible rod
rotating in a viscous fluid driven either by constant torque or at constant
speed. The rod is tilted relative to the rotation axis. At low applied torque,
the rod bends gently and generates small propulsive force. At a critical
torque, the rotation speed increases abruptly and the rod forms a helical shape
with much greater propulsive force. We find good agreement between theory and
experiment.


title:
First determination of the strong coupling constant using NNLO
  predictions for hadronic event shapes in e^+e^- annihilations

abstract:
  We present the first determination of the strong coupling constant from a fit
of next-to-next-to-leading order QCD predictions to event-shape variables,
measured in $e^+e^-$ annihilations at LEP. The data have been collected by the
ALEPH detector at centre-of-mass energies between 91 and 206 GeV. Compared to
results of next-to-leading order fits we observe that the central fit values
are lower by about 10%, with considerably reduced scatter among the results
obtained with different event-shape variables. The dominant systematic
uncertainty from renormalization scale variations is reduced by a factor of
two. By combining the results for several event-shape variables and
centre-of-mass energies, we find \alpha_s(M_Z^2) =
0.1240+-0.0008(stat)+-0.0010(exp)+-0.0011(had)+-0.0029(theo).


title: Khalfin's Theorem and neutral mesons subsystem

abstract:
  We analyze the proof of the Khalfin Theorem for neutral meson complex. The
consequences of this Theorem are discussed: using this Theorem we find, eg.,
that diagonal matrix elements of the exact effective Hamiltonian for the
neutral meson complex can not be equal if CPT symmetry holds and CP symmetry is
violated. The Properties of time evolution governed by a time--independent
effective Hamiltonian acting in the neutral mesons subspace of states are
considered. By means of the Khalfin's Theorem we show that if such Hamiltonian
is time--independent then the evolution operator for the total system
containing neutral meson complex can not be a unitary operator. Within a given
specific model we examine numerically the Khalfin's Theorem. We show for this
model in a graphic form how the Khalfin's Theorem works. We also show for this
model how the difference of the mentioned diagonal matrix elements of the
effective Hamiltonian varies in time.


title:
Point fixe li\'e \`a une orbite p\'eriodique d'un diff\'eomorphisme de
  R2

abstract:
  Given a diffeomorphism of the plane, which has a periodic orbit, we show how
Nielsen fixed point theory can be used to establish the existence of a fixed
point which is linked with this periodic orbit.


title:
Collective excitations of transactinide nuclei in a self-consistent mean
  field theory

abstract:
  The ATDHFB approach has been applied for a study of properties of collective
quadrupole states in several transactinide nuclei: 238U, 240Pu, 242Pu, 246Cm,
248Cm, 250Cf and 252Cf. Calculated energies and B(E2) transition probabilities
are in a reasonable agreement with experimental data. Results concerning
superdeformed collective states in the 240Pu nucleus are also presented.


title: A new upper bound for the cross number of finite Abelian groups

abstract:
  In this paper, building among others on earlier works by U. Krause and C.
Zahlten (dealing with the case of cyclic groups), we obtain a new upper bound
for the little cross number valid in the general case of arbitrary finite
Abelian groups. Given a finite Abelian group, this upper bound appears to
depend only on the rank and on the number of distinct prime divisors of the
exponent. The main theorem of this paper allows us, among other consequences,
to prove that a classical conjecture concerning the cross and little cross
numbers of finite Abelian groups holds asymptotically in at least two different
directions.


title: Duality of Chordal SLE

abstract:
  We derive some geometric properties of chordal SLE$(\kappa;\vec{\rho})$
processes. Using these results and the method of coupling two SLE processes, we
prove that the outer boundary of the final hull of a chordal
SLE$(\kappa;\vec{\rho})$ process has the same distribution as the image of a
chordal SLE$(\kappa';\vec{\rho'})$ trace, where $\kappa>4$,
$\kappa'=16/\kappa$, and the forces $\vec{\rho}$ and $\vec{\rho'}$ are suitably
chosen. We find that for $\kappa\ge 8$, the boundary of a standard chordal
SLE$(\kappa)$ hull stopped on swallowing a fixed $x\in\R\sem\{0\}$ is the image
of some SLE$(16/\kappa;\vec{\rho})$ trace started from $x$. Then we obtain a
new proof of the fact that chordal SLE$(\kappa)$ trace is not reversible for
$\kappa>8$. We also prove that the reversal of SLE$(4;\vec{\rho})$ trace has
the same distribution as the time-change of some SLE$(4;\vec{\rho'})$ trace for
certain values of $\vec{\rho}$ and $\vec{\rho'}$.


title:
Application of the anisotropic bond model to second-harmonic generation
  from amorphous media

abstract:
  As a step toward analyzing second-harmonic generation (SHG) from crystalline
Si nanospheres in glass, we develop an anisotropic bond model (ABM) that
expresses SHG in terms of physically meaningful parameters and provides a
detailed understanding of the basic physics of SHG on the atomic scale.
Nonlinear-optical (NLO) responses are calculated classically via the four
fundamental steps of optics: evaluate the local field at a given bond site,
solve the force equation for the acceleration of the charge, calculate the
resulting radiation, then superpose the radiation from all charges. The ABM
goes beyond previous bond models by including the complete set of underlying
contributions: retardation (RD), spatial-dispersion (SD), and magnetic (MG)
effects, in addition to the anharmonic restoring force acting on the bond
charge. We apply the ABM to obtain analytic expressions for SHG from amorphous
materials under Gaussian-beam excitation. These materials represent an
interesting test case not only because they are ubiquitous but also because the
anharmonic-force contribution that dominates the SHG response of crystalline
materials and ordered interfaces vanishes by symmetry. Using the paraxial-ray
approximation, we reduce the results to the isotropic case in two limits, that
where the linear restoring force dominates (glasses), and that where it is
absent (metals). Both forward- and backscattering geometries are discussed.
Estimated signal strengths and conversion efficiencies for fused silica appear
to be in general agreement with data, where available. Predictions are made
that allow additional critical tests of these results.


title:
Retrieval of electron-atom scattering cross sections from laser-induced
  electron rescattering of atomic negative ions in intense laser fields

abstract:
  We investigated the two-dimensional electron momentum distributions of atomic
negative ions in an intense laser field by solving the time-dependent
Schrodinger equation (TDSE) and using the first- and 2nd-order strong-field
approximations (SFA). We showed that photoelectron energy distributions and
low-energy photoelectron momentum spectra predicted from SFA are in reasonable
agreement with the solutions from the TDSE. More importantly, we showed that
accurate electron-atom elastic scattering cross sections can be retrieved
directly from high-energy electron momentum spectra of atomic negative ions in
the laser field. This opens up the possibility of measuring electron-atom and
electron-molecule scattering cross sections from the photodetachment of atomic
and molecular negative ions by intense short lasers, respectively, with
temporal resolutions in the order of femtoseconds.


title:
Excitable systems with noise and delay with applications to control:
  renewal theory approach

abstract:
  We present an approach for the analytical treatment of excitable systems with
noise-induced dynamics in the presence of time delay. An excitable system is
modeled as a bistable system with a time delay, while another delay enters as a
control term taken after [Pyragas 1992] as a difference between the current
system state and its state "tau" time units before. This approach combines the
elements of renewal theory to estimate the essential features of the resulting
stochastic process as functions of the parameters of the controlling term.


title:
A maximum principle for relaxed stochastic control of linear SDE's with
  application to bond portfolio optimization

abstract:
  We study relaxed stochastic control problems where the state equation is a
one dimensional linear stochastic differential equation with random and
unbounded coefficients. The two main results are existence of an optimal
relaxed control and necessary conditions for optimality in the form of a
relaxed maximum principle. The main motivation is an optimal bond portfolio
problem in a market where there exists a continuum of bonds and the portfolio
weights are modeled as measure-valued processes on the set of times to
maturity.


title: On the transition to efficiency in Minority Games

abstract:
  The existence of a phase transition with diverging susceptibility in batch
Minority Games (MGs) is the mark of informationally efficient regimes and is
linked to the specifics of the agents' learning rules. Here we study how the
standard scenario is affected in a mixed population game in which agents with
the `optimal' learning rule (i.e. the one leading to efficiency) coexist with
ones whose adaptive dynamics is sub-optimal. Our generic finding is that any
non-vanishing intensive fraction of optimal agents guarantees the existence of
an efficient phase. Specifically, we calculate the dependence of the critical
point on the fraction $q$ of `optimal' agents focusing our analysis on three
cases: MGs with market impact correction, grand-canonical MGs and MGs with
heterogeneous comfort levels.

categories: physics.soc-ph cond-mat.dis-nn cond-mat.stat-mech q-fin.GN q-fin.TR


title: Weak distinction and the optimal definition of causal continuity

abstract:
  Causal continuity is usually defined by imposing the conditions (i)
distinction and (ii) reflectivity. It is proved here that a new causality
property which stays between weak distinction and causality, called feeble
distinction, can actually replace distinction in the definition of causal
continuity. An intermediate proof shows that feeble distinction and future
(past) reflectivity implies past (resp. future) distinction. Some new
characterizations of weak distinction and reflectivity are given.


title: Non-equilibrium fluctuation theorems in the presence of local heating

abstract:
  We study two non-equilibrium work fluctuation theorems, the Crooks' theorem
and the Jarzynski equality, for a test system coupled to a spatially extended
heat reservoir whose degrees of freedom are explicitly modeled. The sufficient
conditions for the validity of the theorems are discussed in detail and
compared to the case of classical Hamiltonian dynamics. When the conditions are
met the fluctuation theorems are shown to hold despite the fact that the
immediate vicinity of the test system goes out of equilibrium during an
irreversible process. We also study the effect of the coupling to the heat
reservoir on the convergence of $<\exp(-\beta W)>$ to its theoretical mean
value, where $W$ is the work done on the test system and $\beta$ is the inverse
temperature. It is shown that the larger the local heating, the slower the
convergence.


title: Challenges in Hadron Physics

abstract:
  The status of hadron physics at the end of the HADRON07 Conference is
reviewed. The latest results presented at the conference, as well as those
important developments in the field which were not represented, are included.


title:
Mechanics and Quantum Supermechanics of a Monopole Probe Including a
  Coulomb Potential

abstract:
  A supersymmetric Lagrangian used to study D-particle probes in a D6-brane
background is exactly soluble. We present an analysis of the classical and
quantum mechanics of this theory, including classical trajectories in the
bosonic theory, and the exact quantum spectrum and wavefunctions, including
both bound and unbound states.


title:
Proper motions of ROSAT discovered isolated neutron stars measured with
  Chandra: First X-ray measurement of the large proper motion of RX
  J1308.6+2127/RBS 1223

abstract:
  The unprecedented spatial resolution of the Chandra observatory opens the
possibility to detect with relatively high accuracy proper motions at X-ray
wavelengths. We have conducted an astrometric study of three of the
"Magnificent Seven", the thermally emitting radio quiet isolated neutron stars
(INSs) discovered by ROSAT. These three INSs (RX J0420.0-5022, RX J0806.4-4123
and RX J1308.6+2127/RBS 1223) either lack an optical counterpart or have one
too faint to be used for astrometric purposes. We obtained ACIS observations 3
to 5 years apart to constrain or measure the displacement of the sources on the
X-ray sky using as reference the background of extragalactic or remote galactic
X-ray sources. Upper limits of 138 mas/yr and 76 mas/yr on the proper motion of
RX J0420.0-5022 and RX J0806.4-4123, respectively, have already been presented
in Motch et al. (2007). Here we report the very significant measurement (~ 10
sigma) of the proper motion of the third INS of our program, RX
J1308.6+2127/RBS1223. Comparing observations obtained in 2002 and 2007 reveals
a displacement of 1.1 arcsec implying a yearly proper motion of 223 mas, the
second fastest measured for the ROSAT discovered INSs. The source is rapidly
moving away from the galactic plane at a speed which precludes any significant
accretion of matter from the interstellar medium. Its transverse velocity of ~
740 (d/700pc) km/s might be the largest of the "Magnificent Seven" and among
the fastest recorded for neutron stars. RX J1308.6+2127/RBS1223 is thus a young
high velocity cooling neutron star. The source may have its origin in the
closest part of the Scutum OB2 association about 0.8 Myr ago, an age consistent
with that expected from cooling curves, but significantly younger than inferred
from pulse timing measurements (1.5 Myr).


title: Gravitational-wave data analysis using binary black-hole waveforms

abstract:
  Coalescing binary black-hole systems are among the most promising sources of
gravitational waves for ground-based interferometers. While the \emph{inspiral}
and \emph{ring-down} stages of the binary black-hole coalescence are
well-modelled by analytical approximation methods in general relativity, the
recent progress in numerical relativity has enabled us to compute accurate
waveforms from the \emph{merger} stage also. This has an important impact on
the search for gravitational waves from binary black holes. In particular,
while the current gravitational-wave searches look for each stage of the
coalescence separately, combining the results from analytical and numerical
relativity enables us to \emph{coherently} search for all three stages using a
single template family. `Complete' binary black-hole waveforms can now be
produced by matching post-Newtonian waveforms with those computed by numerical
relativity. These waveforms can be parametrised to produce analytical waveform
templates. The `complete' waveforms can also be used to estimate the efficiency
of different search methods aiming to detect signals from black-hole
coalescences. This paper summarises some recent efforts in this direction.


title: Charm at CLEO-c

abstract:
  A minireview of the recent results from CLEO-c is presented. It includes new
results in charmonium spectroscopy, charmonium-like exotics, and open-charm
decays.


title: The Chemical Evolution of LSB Galaxies

abstract:
  We have derived oxygen and nitrogen abundances of a sample of late-type, low
surface brightness (LSB) galaxies found in the Sloan Digital Sky Survey (SDSS).
Furthermore, we have computed a large grid (5000 models) of chemical evolution
models (CEMs) testing various time-scales for infall, baryon densities and
several power-law initial mass functions (IMFs) as well. Because of the rather
stable N/O-trends found both in CEMs (for a given IMF) and in observations, we
find that the hypotheses that LSB galaxies have stellar populations dominated
by low-mass stars, i.e., very bottom-heavy IMFs (see Lee et al. 2004), can be
ruled out. Such models predict much too high N/O-ratios and generally too low
O/H-ratios. We also conclude that LSB galaxies probably have the same ages as
their high surface brightness counterparts, although the global rate of star
formation must be considerably lower in these galaxies.


title: Multipartite entanglement measure for all discrete systems

abstract:
  Via a multidimensional complementarity relation we derive a novel operational
entanglement measure for any discrete quantum system, i.e. for any
multidimensional and multipartite system. This new measure admits a separation
into different classes of entanglement obtained by using a flip operator
2,3,...,n times, defining a m-flip concurrence. For mixed states bounds on this
m-flip concurrence can be obtained. Moreover, the information content of a n
partite multidimensional system admits an intuitive interpretation. Explicitly,
the three qubits system is analyzed and the physical difference in entanglement
of the W-state, the GHZ state or the bi-separable state is revealed.


title: Superluminal propagation of evanescent modes as a quantum effect

abstract:
  Contrary to mechanical waves, the two-slit interference experiment of single
photons shows that the behavior of classical electromagnetic waves corresponds
to the quantum mechanical one of single photons, which is also different from
the quantum-field-theory behavior such as the creations and annihilations of
photons, the vacuum fluctuations, etc. Owing to a purely quantum effect,
quantum tunneling particles including tunneling photons (evanescent modes) can
propagate over a spacelike interval without destroying causality. With this
picture we conclude that the superluminality of evanescent modes is a quantum
mechanical rather than a classical phenomenon.


title: Entanglement renormalization and topological order

abstract:
  The multi-scale entanglement renormalisation ansatz (MERA) is argued to
provide a natural description for topological states of matter. The case of
Kitaev's toric code is analyzed in detail and shown to possess a remarkably
simple MERA description leading to distillation of the topological degrees of
freedom at the top of the tensor network. Kitaev states on an infinite lattice
are also shown to be a fixed point of the RG flow associated with entanglement
renormalization. All these results generalize to arbitrary quantum double
models.


title: The Decomposition Theorem and the topology of algebraic maps

abstract:
  We give a motivated introduction to the theory of perverse sheaves,
culminating in the Decomposition Theorem of Beilinson, Bernstein, Deligne and
Gabber. A goal of this survey is to show how the theory develops naturally from
classical constructions used in the study of topological properties of
algebraic varieties. While most proofs are omitted, we discuss several
approaches to the Decomposition Theorem, indicate some important applications
and examples.


title:
Quantization of kappa-deformed free fields and kappa-deformed
  oscillators

abstract:
  We describe the deformed E.T. quantization rules for kappa-deformed free
quantum fields, and relate these rules with the kappa-deformed algebra of field
oscillators.


title:
Improved Time Domain Method to Measure Near-Field Distribution of
  Buried-Object

abstract:
  The paper analyses the ground antenna echo using microwave frequency detector
and high speed sampling technology and a new method detecting buried object in
time domain near-field is presented. The method detecting particular reflection
echo frequency of microwave pulse via digital signal processing is to reduce
the false alarm rate. Simulation results show that this method has advantages
of easy identification and high precision.


title:
Are Seyfert 2 Galaxies without Polarized Broad Emission Lines More
  Obscured?

abstract:
  The new $XMM-Newton$ data of seven Seyfert 2 galaxies with optical
spectropolarimetric observations are presented. The analysis of 0.5 -- 10 keV
spectra shows that all four Seyfert 2 galaxies with polarized broad lines
(PBLs) are absorbed with $N_{\rm H}<10^{24}$ cm$^{-2}$, while two of three
Seyfert 2 galaxies without PBLs have evidence suggesting Compton-thick
obscuration, supporting the conclusion that Seyfert 2 galaxies without PBLs are
more obscured than those with PBLs. Adding the measured obscuration indicators
($N_{\rm H}$, $T$ ratio, and Fe K$\alpha$ line EW) of six luminous AGNs to our
previous sample improves the significance level of the difference in absorption
from 92.3% to 96.3% for $N_{\rm H}$, 99.1% to 99.4% for $T$ ratio, and 95.3% to
97.4% for Fe K$\alpha$ line EW. The present results support and enhance the
suggestions that the absence of PBLs in Seyfert 2 galaxies can be explained by
larger viewing angle of line of sight to the putative dusty torus, which lead
to the obscuration of broad-line scattering screen, as expected by the
unification model.


title:
Multi-patch methods in general relativistic astrophysics - I.
  Hydrodynamical flows on fixed backgrounds

abstract:
  Many systems of interest in general relativistic astrophysics, including
neutron stars, accreting compact objects in X-ray binaries and active galactic
nuclei, core collapse, and collapsars, are assumed to be approximately
spherically symmetric or axisymmetric. In Newtonian or fixed-background
relativistic approximations it is common practice to use spherical polar
coordinates for computational grids; however, these coordinates have
singularities and are difficult to use in fully relativistic models. We
present, in this series of papers, a numerical technique which is able to use
effectively spherical grids by employing multiple patches. We provide detailed
instructions on how to implement such a scheme, and present a number of code
tests for the fixed background case, including an accretion torus around a
black hole.


title:
f0(980) meson as a K bar K molecule in a phenomenological Lagrangian
  approach

abstract:
  We discuss a possible interpretation of the f0(980) meson as a hadronic
molecule - a bound state of K and bar K mesons. Using a phenomenological
Lagrangian approach we calculate the strong f0(980) to pi pi and
electromagnetic f0(980) to gamma gamma decays. The compositeness condition
provides a self-consistent method to determine the coupling constant between f0
and its constituents, K and bar K. Form factors governing the decays of the
f0(980) are calculated by evaluating the kaon loop integrals. The predicted
f0(980) to pi pi and f0(980) to gamma gamma decay widths are in good agreement
with available data and results of other theoretical approaches.


title:
Bright and dark solitary waves in a one-dimensional spin-polarized gas
  of fermionic atoms with p-wave interactions in a hard-wall trap

abstract:
  In this paper we elucidate the physics underlying the fact that both bright
and dark solitary waves can arise in a one-dimensional spin-polarized gas of
fermionic atoms with attractive three-dimensional p-wave interactions in a
hard-wall trap. This is possible since the one-dimensional fermion system can
be mapped to a system of bosons described by the Lieb-Liniger model with either
repulsive or attractive delta-function interactions which can support solitary
waves.


title: Timelike Form Factors

abstract:
  Form factors of nucleons and mesons with timelike momentum transfers are
discussed. New experimental results for protons, pions, and kaons at large
momentum transfers are presented, and the inadequacy of existing theoretical
ideas about these is pointed out.


title: Charged particle pseudorapidity distributions from SPS to LHC

abstract:
  Pseudorapidity distributions of charged particles produced in heavy ion
collisions are a powerful tool to characterize the global properties of the
created system. They have been measured in a wide range of energies at the GSI,
AGS, SPS and RHIC accelerators and will be one of the first measurements at
ALICE at the LHC. The various analysis techniques developed by SPS and RHIC
experiments are reviewed and the presently available results from SPS and RHIC
are presented, focusing in particular on the scaling of charged particle yield
with centrality and with center-of-mass energy. Finally the perspectives for
the multiplicity measurement in the ALICE experiment at the LHC are discussed.


title: Cadence Optimisation and Exoplanetary Parameter Sensitivity

abstract:
  To achieve maximum planet yield for a given radial velocity survey, the
observing strategy must be carefully considered. In particular, the adopted
cadence can greatly affect the sensitivity to exoplanetary parameters such as
period and eccentricity. Here we describe simulations which aim to maximise
detections based upon the target parameter space of the survey.