title:
Evidence for two energy gaps and Fermi liquid behavior in SrPt$_2$As$_2$
  superconductor

abstract:
  We report a detailed calorimetric study on single crystals of the
5$d$-transition metal pnictide SrPt2As2 with a superconducting critical
temperature $T_c$ $\sim$5K. The peculiar field dependence of the electronic
specific heat coefficient $\gamma$ can be decomposed into two linear
components. Moreover, the temperature evolution of the electronic specific heat
below $T_c$ is best described by a two-gap model. These findings suggest that
two energy gaps are associated with the superconductivity. In parallel, we show
that the spin-lattice relaxation time $T_1$, through nuclear magnetic resonance
measurement, obeys the so-called Korringa relation well. This, along with the
$T^2$ dependence of resistivity at low temperatures, points to a Fermi liquid
ground state in this material.


title:
A GOST-like Blind Signature Scheme Based on Elliptic Curve Discrete
  Logarithm Problem

abstract:
  In this paper, we propose a blind signature scheme and three practical educed
schemes based on elliptic curve discrete logarithm problem. The proposed
schemes impart the GOST signature structure and utilize the inherent advantage
of elliptic curve cryptosystems in terms of smaller key size and lower
computational overhead to its counterpart public key cryptosystems such as RSA
and ElGamal. The proposed schemes are proved to be secure and have less time
complexity in comparison with the existing schemes.


title:
On Galois equivariance of homomorphisms between torsion potentially
  crystalline representations

abstract:
  Let K be a complete discrete valuation field of mixed characteristic (0,p)
with perfect residue field. Let (\pi_n)_{n\ge 0} be a system of p-power roots
of a uniformizer \pi=\pi_0 of K with \pi^p_{n+1}=\pi_n, and define G_s (resp.\
G_{\infty}) the absolute Galois group of K(\pi_s) (resp.\
K_{\infty}:=\bigcup_{n\ge 0} K(\pi_n)). In this paper, we study
G_s-equivatiantness properties of G_{\infty}-equivariant homomorphisms between
torsion (potentially) crystalline representations


title: Equivalence of multi-norms

abstract:
  The theory of multi-norms was developed by H.\ G.\ Dales and M.\ E.\ Polyakov
in a memoir that was published in \emph{Dissertationes Mathematicae}. In that
memoir, the notion of `equivalence' of multi-norms was defined. In the present
memoir, we make a systematic study of when various pairs of multi-norms are
mutually equivalent.


title:
Solving Linear Equations by Classical Jacobi-SR Based Hybrid
  Evolutionary Algorithm with Uniform Adaptation Technique

abstract:
  Solving a set of simultaneous linear equations is probably the most important
topic in numerical methods. For solving linear equations, iterative methods are
preferred over the direct methods especially when the coefficient matrix is
sparse. The rate of convergence of iteration method is increased by using
Successive Relaxation (SR) technique. But SR technique is very much sensitive
to relaxation factor, {\omega}. Recently, hybridization of classical
Gauss-Seidel based successive relaxation technique with evolutionary
computation techniques have successfully been used to solve large set of linear
equations in which relaxation factors are self-adapted. In this paper, a new
hybrid algorithm is proposed in which uniform adaptive evolutionary computation
techniques and classical Jacobi based SR technique are used instead of
classical Gauss-Seidel based SR technique. The proposed Jacobi-SR based uniform
adaptive hybrid algorithm, inherently, can be implemented in parallel
processing environment efficiently. Whereas Gauss-Seidel-SR based hybrid
algorithms cannot be implemented in parallel computing environment efficiently.
The convergence theorem and adaptation theorem of the proposed algorithm are
proved theoretically. And the performance of the proposed Jacobi-SR based
uniform adaptive hybrid evolutionary algorithm is compared with Gauss-Seidel-SR
based uniform adaptive hybrid evolutionary algorithm as well as with both
classical Jacobi-SR method and Gauss-Seidel-SR method in the experimental
domain. The proposed Jacobi-SR based hybrid algorithm outperforms the
Gauss-Seidel-SR based hybrid algorithm as well as both classical Jacobi-SR
method and Gauss-Seidel-SR method in terms of convergence speed and
effectiveness.


title:
Study of unconventional superfluid phases and the phase dynamics in
  spin-orbit coupled bose system

abstract:
  We study the phase distribution and its dynamics in spin-orbit coupled two
component ultracold Bosons for finite size system. Using an inhomogeneous
meanfield analysis we demonstrate how phase distribution evolves as we tune the
spin-orbit coupling $\gamma$ and $t$, the spin-independent hopping. For
$t>>\gamma$ we find the homogeneous superfluid phase. As we increase $\gamma$,
differences in the phases of the order parameter grows leading to twisted
superfluid phase. For $t \sim \gamma$ competing orderings in the phase
distribution is observed. At large $\gamma$ limit a Ferro-Magnetic stripe
ordering appears along the diagonal. We explain that this is due to the
frustration bought in by the spin-orbit interaction. Isolated vortex formation
is also shown to appear. We also investigate the possible collective modes. In
deep superfluid regime we derive the equation of motion for the phases
following a semi-classical approximation. Imaginary frequencies indicating the
damped modes are seen to appear and the dynamics of lowest normal modes are
discussed.


title:
$Z_{2}$ fractionalized Chern/topological insulators in an exactly
  soluble correlated model

abstract:
  In this paper we propose an exactly soluble model in two-dimensional
honeycomb lattice, from which two phases are found. One is the usual
Chern/topological insulating state and the other is an interesting $Z_2$
fractionalized Chern/topological insulator. While their bulk properties are
similar, the edge-states of physical electrons are quite different. The single
electron excitation of the former shows a free particle-like behavior while the
latter one is gapped, which provides a definite signature to identify the
fractionalized states. The transition between these two phases is found to fall
into the 3D Ising universal class. Significantly, near the quantum transition
point the physical electron in the edge-states shows strong Luttinger liquid
behavior. An extension to the interesting case of the square lattice is also
made. In addition, we also discuss some relationship between our exactly
soluble model and various Hubbard-like models existing in the literature. The
essential difference between the proposed $Z_{2}$ fractionalized Chern
insulator and the hotly pursued fractional Chern insulator is also pointed out.
The present work may be helpful for further study on the fractionalized
insulating phase and related novel correlated quantum phases.


title:
The distribution of the first elementary divisor of the reductions of a
  generic Drinfeld module of arbitrary rank

abstract:
  Let $\psi$ be a generic Drinfeld module of rank $r \geq 2$. We study the
first elementary divisor $d_{1, \wp}(\psi)$ of the reduction of $\psi$ modulo a
prime $\wp$, as $\wp$ varies. In particular, we prove the existence of the
density of the primes $\wp$ for which $d_{1, \wp} (\psi)$ is fixed. For $r =
2$, we also study the second elementary divisor (the exponent) of the reduction
of $\psi$ modulo $\wp$ and prove that, on average, it has a large norm. Our
work is motivated by the study of J.-P. Serre of an elliptic curve analogue of
Artin's Primitive Root Conjecture, and, moreover, by refinements to Serre's
study developed by the first author and M. R. Murty.


title: Controllable generation of mixed two-photon states

abstract:
  We report a controllable method for producing mixed two-photon states via
Spontaneous Parametric Down-Conversion with a two-type-I crystal geometry. By
using variable polarization rotators (VPRs), one obtains mixed states of
various purities and degrees of entanglement depending on the parameters of the
VPRs. The generated states are characterized by quantum state tomography. The
experimental results are found to be in good agreement with the theory. The
method can be easily implemented for various experiments which require the
generation of states with controllable degrees of entanglement or mixedness.


title: Pairing symmetry in BiS$_{2}-$based superconductors

abstract:
  The possible pairing symmetries for BiS$_{2}-$based superconductors is
investigated by using a minimal two-orbital model with onsite and
nearest-neighbor intraorbital attractions $V_{0}$ and $V_{1}$, respectively. By
using the mean-field approximation and solving the self-consistent equations,
the phase diagram of the pairing symmetry is obtained. It is shown that the
model allows three possible pairing symmetries, depending on the values of
$V_{0}$ and $V_{1}$: the isotopic $s-$wave pairing
[$\Delta_{\mathbf{k}}=\Delta_{s}$], the anisotropic $s-$wave pairing
[$\Delta_{\mathbf{k}}=\Delta_{s}+\frac{\Delta_{xs}}{2}(\cos k_{x}+\cos k_{y})$]
and the $d-$wave pairing [$\Delta_{\mathbf{k}}=\frac{\Delta_{d}}{2}(\cos
k_{x}-\cos k_{y})$]. Furthermore the density of states for these pairing
symmetries exhibit different behaviors which can be used to distinguish them.


title:
High-Throughput Cooperative Communication with Interference Cancellation
  for Two-Path Relay in Multi-source System

abstract:
  Relay-based cooperative communication has become a research focus in recent
years because it can achieve diversity gain in wireless networks. In existing
works, network coding and two-path relay are adopted to deal with the increase
of network size and the half-duplex nature of relay, respectively. To further
improve bandwidth efficiency, we propose a novel cooperative transmission
scheme which combines network coding and two-path relay together in a
multi-source system. Due to the utilization of two-path relay, our proposed
scheme achieves full-rate transmission. Adopting complex field network coding
(CFNC) at both sources and relays ensures that symbols from different sources
are allowed to be broadcast in the same time slot. We also adopt physical-layer
network coding (PNC) at relay nodes to deal with the inter-relay interference
caused by the two-path relay. With careful process design, the ideal throughput
of our scheme achieves by 1 symbol per source per time slot (sym/S/TS).
Furthermore, the theoretical analysis provides a method to estimate the symbol
error probability (SEP) and throughput in additive complex white Gaussian noise
(AWGN) and Rayleigh fading channels. The simulation results verify the
improvement achieved by the proposed scheme.


title: Structural, Optical and dielectric study of Mn doped PrFeO3 ceramics

abstract:
  Polycrystalline bulk samples of PrFe1-xMnxO3 (x=0.0, 0.1, 0.3, 0.5) were
synthesized by solid state reaction method to understand their structural,
optical and dielectric properties


title: Nonlinear localized modes in PT-symmetric Rosen-Morse potential well

abstract:
  We report the existence and properties of localized modes described by
nonlinear Schroedinger equation with complex PT-symmetric Rosen-Morse potential
well. Exact analytical expressions of the localized modes are found in both one
dimensional and two-dimensional geometry with self-focusing and self-defocusing
Kerr nonlinearity. Linear stability analysis reveals that these localized modes
are unstable for all real values of the potential parameters although
corresponding linear Schroedinger eigenvalue problem possesses unbroken
PT-symmetry. This result has been verified by the direct numerical simulation
of the governing equation. The transverse power flow density associated with
these localized modes has also been examined.


title:
Spectral characterization of third-order harmonic generation assisted by
  two-dimensional plasma grating in air

abstract:
  A dramatic spectral modulation of third-order harmonic (TH) emission
generated in a near in- frared femtosecond (fs) pulse filamentation, assisted
by a two-dimensional plasma grating formed by two pump femtosecond pulses, is
experimentally demonstrated when their spatiotemporal overlap is achieved. It
is mainly attributed to strong cross-phase modulation induced by the
fundamental wave of the probe pulse and two pump ones. The delay dynamic of TH
spectra indicates the influence of two retarded nonlinear responses on the TH
generation. The dependences of TH generation on the energies of probe and pump
pulses, relative field polarization angle are also studied.


title: New artificial-free phase 1 simplex method

abstract:
  This paper presents new and easy to use versions of primal and dual phase 1
processes which obviate the role of artificial variables and constraints by
allowing negative variables into the basis. During the process new method
visits the same sequence of corner points as the traditional phase 1 does. The
new method is artificial free so, it also avoids stalling and saves degenerate
pivots in many cases of linear programming problems.


title:
Criticality in Alternating Layered Ising Models : I. Effects of
  connectivity and proximity

abstract:
  The specific heats of exactly solvable alternating layered planar Ising
models with strips of width $m_1$ lattice spacings and ``strong'' couplings
$J_1$ sandwiched between strips of width $m_2$ and ``weak'' coupling $J_2$,
have been studied numerically to investigate the effects of connectivity and
proximity. We find that the enhancements of the specific heats of the strong
layers and of the overall or `bulk' critical temperature,
$T_c(J_1,J_2;m_1,m_2)$, arising from the collective effects reflect the
observations of Gasparini and coworkers in experiments on confined superfluid
helium. Explicitly, we demonstrate that finite-size scaling holds in the
vicinity of the upper limiting critical point $T_{1c}$ ($\propto J_1/k_B$) and
close to the corresponding lower critical limit $T_{2c}$ ($\propto J_2/k_B$)
when $m_1$ and $m_2$ increase. However, the residual {\it enhancement}, defined
via appropriate subtractions of leading contributions from the total specific
heat, is dominated (away from $T_{1c}$ and $T_{2c}$) by a decay factor
$1/(m_1+m_2)$ arising from the {\it seams} (or boundaries) separating the
strips; close to $T_{1c}$ and $T_{2c}$ the decay is slower by a factor $\ln
m_1$ and $\ln m_2$, respectively.


title:
Automatic Fingerprint Recognition Using Minutiae Matching Technique for
  the Large Fingerprint Database

abstract:
  Extracting minutiae from fingerprint images is one of the most important
steps in automatic fingerprint identification system. Because minutiae matching
are certainly the most well-known and widely used method for fingerprint
matching, minutiae are local discontinuities in the fingerprint pattern. In
this paper a fingerprint matching algorithm is proposed using some specific
feature of the minutiae points, also the acquired fingerprint image is
considered by minimizing its size by generating a corresponding fingerprint
template for a large fingerprint database. The results achieved are compared
with those obtained through some other methods also shows some improvement in
the minutiae detection process in terms of memory and time required.


title: An Improved GEF Fast Addition Algorithm

abstract:
  In this paper, an improved GEF fast addition algorithm is proposed. The
proposed algorithm reduces time and memory space. In this algorithm, carry is
calculated on the basis of arrival timing of the operand's bits without
overhead of sorting. Intermediate terms are generated from the most significant
bit and the carry is generated from the least significant bit using the
functions of efficient operators. This algorithm shows better performance for
use in the fastest computational devices of the near future.


title: Sakai-Sugimoto model in D0-D4 background

abstract:
  We add smeared D0 charges to the D4 background and discuss Sakai-Sugimoto
model under this background. The corresponding gauge theory develops a glue
condensate $< tr (F_{\mu\nu}\tilde F^{\mu\nu})> $. The D8 branes go less deep
than in the original S-S model and massless Goldstones are still found in the
spectrum. The effects of the condensate on the meson spectra, pion decay
constant, and couplings of the vector mesons and Goldstones are then
investigated.


title:
A Probabilistic Algorithm for Reducing Broadcast Redundancy in Ad Hoc
  Wireless Networks

abstract:
  In a wired network, a packet can be transmitted to a specified destination
only, no broadcasting required. But in ad hoc wireless network a packet
transmitted by a node can reach all neighbors due to broadcasting. This
broadcasting introduces unnecessary retransmissions of same message. Therefore,
the total number of transmissions (forward nodes) is generally used as the cost
criterion for broadcasting. The problem of finding the minimum number of
forward nodes is NP-complete. In this paper, the goal is to reduce the number
of forward nodes which will reduce redundant transmission as a result. Thus
some of approximation approaches are analyzed, especially dominant pruning and
total dominant pruning which use 2-hop neighborhood information and a new
approach: Probability based algorithm is proposed with a view to minimizing
number of forward nodes. Simulation results of applying this algorithm shows
performance improvements with compared to dominant pruning and total dominant
pruning algorithms.


title:
Transverse energy and charged particle production in heavy-ion
  collisions: From RHIC to LHC

abstract:
  We study the charged particle and transverse energy production mechanism from
AGS, SPS, RHIC to LHC energies in the framework of nucleon and quark
participants. At RHIC and LHC energies, the number of nucleons-normalized
charged particle and transverse energy density in pseudorapidity, which shows a
monotonic rise with centrality, turns out to be an almost centrality
independent scaling behaviour when normalized to the number of participant
quarks. A universal function which is a combination of logarithmic and
power-law, describes well the charged particle and transverse energy production
both at nucleon and quark participant level for the whole range of collision
energies. Energy dependent production mechanisms are discussed both for
nucleonic and partonic level. Predictions are made for the pseudorapidity
densities of transverse energy, charged particle multiplicity and their ratio
(the barometric observable, $\frac{dE_{\rm{T}}/d\eta}{dN_{\rm{ch}}/d\eta}
~\equiv \frac{E_{\rm{T}}}{N_{\rm{ch}}}$) at mid-rapidity for Pb+Pb collisions
at $\sqrt{s_{\rm{NN}}}=5.5$ TeV. A comparison with models based on gluon
saturation and statistical hadron gas is made for the energy dependence of
$\frac{E_{\rm{T}}}{N_{\rm{ch}}}$.


title: Buschman-Erdelyi transmutations, classification and applications

abstract:
  This survey paper contains brief historical information, main known facts and
original author's results on the theory of transmutations and some
applications. Operators of Buschman-Erdelyi type were first studied by
E.T.Copson, R.G.Buschman and A.Erdelyi as integral operators. In 1990's the
author was first to prove transmutational nature of these operators and
published papers with detailed study of their properties. This class include as
special cases such famous objects as Sonine-Poisson-Delsarte transmutations and
fractional Riemann-Lioville integrals. In this paper Buschman-Erdelyi
transmutations are fully classified as operators of the first kind with special
case of zero order smoothness operators, second kind and third kind with
special case of unitary Sonine-Katrakhov and Poisson-Katrakhov transmutations.
We study such properties as transmutational conditions, factorizations, norm
estimates, connections with classical integral transforms. Applications are
considered to singular partial differential equations, embedding theorems with
sharp constants in Kipriyanov spaces, Euler-Poisson-Darboux equation including
Copson lemma, generalized translations, Dunkl operators, Radon transform,
generalized harmonics theory, Hardy operators, V.V.Katrakhov's results on
pseudodifferential operators and problems of new kind for equations with
solutions of arbitrary growth at singularity.
  The Russian original paper version is also included, it is slightly different
from english one.


title:
Engineering the geometry of stripe-patterned surfaces towards efficient
  wettability switching

abstract:
  The ability to control wettability is important for a wide range of
technological applications in which precise microfluidic handling is required.
It is known that predesigned roughness at a micro- or nano- scale enhances the
wetting properties of solid materials giving rise to super-hydrophobic or
super-hydrophilic behavior. In this work, we study the dependence of the
apparent wettability of a stripe-patterned solid surface on the stripe
geometry, utilizing systems level analysis and mesoscopic Lattice-Boltzmann
(LB) simulations. Through the computation of both stable and unstable states we
are able to determine the energy barriers separating distinct metastable
wetting states that correspond to the well-known Cassie and Wenzel states. This
way the energy cost for inducing certain wetting transitions is computed and
its dependence on geometric features of the surface pattern is explored.


title:
Radiation pressure excitation of test mass ultrasonic modes via three
  mode opto-acoustic interactions in a suspended Fabry-Perot cavity

abstract:
  Three-mode parametric-instabilities risk stable operation of
gravitational-wave detectors. Instabilities occur through time varying
radiation-pressure distributions, derived from beating between two optical
modes, exciting mirror acoustic modes in Fabry-Perot cavities. Here we report
the first demonstration of radiation-pressure driving of ultrasonic-acoustic
modes via pairs of optical modes in gravitational-wave type optical cavities.
In this experiment ~0.4W of TEM01 mode and ~1kW of TEM00 mode circulated inside
the cavity, an ~181.6kHz excitation was observed with amplitude ~5E-13m. The
results verify the driving force term in Braginsky's parametric instability
feedback model. The interaction parametric gain was (3.8+/-0.5)E-3 and
mass-ratio scaled opto-acoustic overlap 2.7+/-0.4.


title: Optical addressing of an individual erbium ion in silicon

abstract:
  The detection of electron spins associated with single defects in solids is a
critical operation for a range of quantum information and measurement
applications currently under development. To date, it has only been
accomplished for two centres in crystalline solids: phosphorus in silicon using
electrical readout based on a single electron transistor (SET) and
nitrogen-vacancy centres in diamond using optical readout. A spin readout
fidelity of about 90% has been demonstrated with both electrical readout and
optical readout, however, the thermal limitations of the electrical readout and
the poor photon collection efficiency of the optical readout hinder achieving
the high fidelity required for quantum information applications. Here we
demonstrate a hybrid approach using optical excitation to change the charge
state of the defect centre in a silicon-based SET, conditional on its spin
state, and then detecting this change electrically. The optical frequency
addressing in high spectral resolution conquers the thermal broadening
limitation of the previous electrical readout and charge sensing avoids the
difficulties of efficient photon collection. This is done with erbium in
silicon and has the potential to enable new architectures for quantum
information processing devices and to dramatically increase the range of defect
centres that can be exploited. Further, the efficient electrical detection of
the optical excitation of single sites in silicon is a major step in developing
an interconnect between silicon and optical based quantum computing
technologies.


title: A Training effect on electrical properties in nanoscale BiFeO$_3$

abstract:
  We report our observation of the training effect on dc electrical properties
in a nanochain of BiFeO$_3$ as a result of large scale migration of defects
under combined influence of electric field and Joule heating. We show that an
optimum number of cycles of electric field within the range zero to $\sim$1.0
MV/cm across a temperature range 80-300 K helps in reaching the stable state
via a glass-transition-like process in the defect structure. Further treatment
does not give rise to any substantial modification. We conclude that such a
training effect is ubiquitous in pristine nanowires or chains of oxides and
needs to be addressed for applications in nanoelectronic devices.


title: Space symmetries draw elasticity theory

abstract:
  The foundation of continuum elasticity theory is based on two general
principles: (i) the force felt by a small volume element from its surrounding
acts only through its surface (the Cauchy principle, justified by the fact that
interactions are of short range and are therefore localized at the boundary);
(ii) the stress tensor must be symmetric in order to prevent spontaneous
rotation of the material points. These two requirements are presented to be
necessary in classical textbooks on elasticity theory. By using only basic
spatial symmetries it is shown that elastodynamics equations can be derived,
for high symmetry crystals (the typical case considered in most textbooks),
without evoking any of the two above physical principles.


title:
Competing Supersolid and Haldane Insulator phases in the extended
  one-dimensional bosonic Hubbard model

abstract:
  The Haldane Insulator is a gapped phase characterized by an exotic non-local
order parameter. The parameter regimes at which it might exist, and how it
competes with alternate types of order, such as supersolid order, are still
incompletely understood. Using the Stochastic Green Function (SGF) quantum
Monte Carlo (QMC) and the Density Matrix Renormalization Group (DMRG), we study
numerically the ground state phase diagram of the one-dimensional bosonic
Hubbard model (BHM) with contact and near neighbor repulsive interactions. We
show that, depending on the ratio of the near neighbor to contact interactions,
this model exhibits charge density waves (CDW), superfluid (SF), supersolid
(SS) and the recently identified Haldane insulating (HI) phases. We show that
the HI exists only at the tip of the unit filling CDW lobe and that there is a
stable SS phase over a very wide range of parameters.


title: Equation of state for neutron stars in SU(3) flavor symmetry

abstract:
  Using several relativistic mean field models (such as GM1, GM3, NL3, TM1,
FSUGold and IU-FSU) as well as the quark-meson coupling model, we calculate the
particle fractions, the equation of state, the maximum mass and radius of a
neutron star within relativistic Hartree approximation. In determining the
couplings of the isoscalar, vector mesons to the octet baryons, we examine the
extension of SU(6) spin-flavor symmetry to SU(3) flavor symmetry. Furthermore,
we consider the strange ($\sigma^{\ast}$ and $\phi$) mesons, and study how they
affect the equation of state. We find that the equation of state in SU(3)
symmetry can sustain a neutron star with mass of $(1.8 \sim 2.1) M_{\odot}$
even if hyperons exist inside the core. In addition, the strange vector
($\phi$) meson and the variation of baryon structure in matter also play
important roles in supporting a massive neutron star.


title:
Semilinear Stochastic Evolution Equations with L\'evy Noise and Monotone
  Nonlinearity

abstract:
  Semilinear stochastic evolution equations with multiplicative L\'evy noise
and monotone nonlinear drift are considered. Unlike other similar work we do
not impose coercivity conditions on coefficients. Existence and uniqueness of
the mild solution is proved using an iterative method. The continuity of the
solution with respect to initial conditions and coefficients is proved and a
sufficient condition for exponential asymptotic stability of the solutions has
been derived. The solutions are proved to have a Markov property. Examples on
stochastic partial differential equations and stochastic delay equations are
provided to demonstrate the theory developed. The main tool in our study is an
It\^o type inequality which gives a pathwise bound for the norm of stochastic
convolution integrals.


title:
Temperature dependence of spin polarization in ferromagnetic metals
  using lateral spin valves

abstract:
  A high reproducibility in the performance of cobalt/copper and
permalloy/copper lateral spin valves with transparent contacts is obtained by
optimizing the interface quality and the purity of copper. This allows us to
study comprehensively the spin injection properties of both ferromagnetic
materials, as well as the spin transport properties of copper, which are not
affected by the used ferromagnetic material, leading to long spin diffusion
lengths. Spin polarizations of permalloy and cobalt are obtained as a function
of temperature. Analysis of the temperature dependence of both the spin
polarization and conductivity of permalloy using the standard two-channel model
for ferromagnetic metals suggests that a correction factor of ~2 is needed for
the spin polarization values obtained by lateral spin valve experiments.


title: Resonant Production of Sbottom via RPV Couplings at the LHeC

abstract:
  Resonant production of scalar bottom, which is allowed in R-parity violating
interactions of supersymmetry, has been investigated at the LHeC collider.
Although searching for the physics beyond the standard model is a primary task
of the LHC, recently, an $\mathit{e^{-}p}$ collider (LHeC) is proposed to
complement and resolve the observation of new phenomena at the TeV scale. In
this paper, we have studied on the prospects of improving constraints for
$\hat{L}\hat{Q}\hat{D}$ couplings $\lambda_{ijk}'$ through the process
$\mathit{e^{-}+p\rightarrow\widetilde{b^{*}}\rightarrow\mu^{-}+\bar{q}}$ where
$\mathit{q}$ denotes the up type quarks. It is shown that constraints on
$\lambda_{ijk}'$ can be improved up to 10^{-3} for 1\: fb^{-1} integrated
luminosity at 95% C.L. with 60 GeV $\mathit{e^{-}}$ beam option of the LHeC.


title: Modified Ricci flow and asymptotically non-flat spaces

abstract:
  The present work extends the application of a modified Ricci flow equation to
an asymptotically non flat space, namely Marder's cylindrially symmetric space.
It is found that the flow equation has a solution at least in a particular
case.


title: Braess like Paradox in a Small World Network

abstract:
  Braess \cite{1} has been studied about a traffic flow on a diamond type
network and found that introducing new edges to the networks always does not
achieve the efficiency. Some researchers studied the Braess' paradox in similar
type networks by introducing various types of cost functions. But whether such
paradox occurs or not is not scarcely studied in complex networks. In this
article, I analytically and numerically study whether Braess like paradox
occurs or not on Dorogovtsev-Mendes network\cite{2}, which is a sort of small
world networks. The cost function needed to go along an edge is postulated to
be equally identified with the length between two nodes, independently of an
amount of traffic on the edge. It is also assumed the it takes a certain cost
$c$ to pass through the center node in Dorogovtsev-Mendes network. If $c$ is
small, then bypasses have the function to provide short cuts. As result of
numerical and theoretical analyses, while I find that any Braess' like paradox
will not occur when the network size becomes infinite, I can show that a
paradoxical phenomenon appears at finite size of network.


title:
The structure of nucleons and the description of the electromagnetic
  form factors

abstract:
  The comparison of different sets of PDFs structure functions with the
description of the whole sets of experimental data of electromagnetic form
factors of the proton and neutron is made in the frame work of our model of
t-dependence of generalized parton distributions (GPDs) and some other models.
It is shown that despite a small difference of the description of the inelastic
processes by the different sets of PDF there is an essentially large difference
in the description of electromagnetic form factors of the nucleons.


title: Holographic Fermionic Liquid with Lattices

abstract:
  We investigate the holographic fermions over a gravitational lattice
background with a rather low temperature. Since the rotation symmetry is broken
on the plane, the lattice effects change the shape of the Fermi surface within
the first Brillouin zone from a circle to an ellipse. When the Fermi surface
intersects with the Brillouin zone boundary, the band structure with a band gap
is observed through a numerical analysis. We construct a lattice model sourced
by a scalar field as well as an ionic lattice model without the scalar field.
In both cases we find the similar physical results.


title:
A gentle introduction to the discrete Laplace method for estimating
  Y-STR haplotype frequencies

abstract:
  Y-STR data simulated under a Fisher-Wright model of evolution with a
single-step mutation model turns out to be well predicted by a method using
discrete Laplace distributions.


title:
Inhomogeneous "longitudinal" circularly-polarized plane waves in
  anisotropic elastic crystals

abstract:
  Conditions on the elastic stiffnesses of anisotropic crystals are derived
such that circularly polarized longitudinal inhomogeneous plane waves with an
isotropic slowness bivector may propagate for any given direction of the normal
to the sagittal plane. Once this direction is chosen, then the wave speed, the
direction of propagation, and the direction of attenuation are expressed in
terms of the mass density, the elastic stiffnesses, and the angle between the
normal to the sagittal plane and the normals (also called "optic axes") to the
planes of central circular section of a certain ellipsoid. In the special case
where this angle is zero, and in this special case only, such waves cannot
propagate.


title: Tame Class Field Theory for Global Function Fields

abstract:
  We give a function field specific, algebraic proof of the main results of
class field theory for abelian extensions of degree coprime to the
characteristic. By adapting some methods known for number fields and combining
them in a new way, we obtain a different and much simplified proof, which
builds directly on a standard basic knowledge of the theory of function fields.
Our methods are explicit and constructive and thus relevant for algorithmic
applications. We use generalized forms of the Tate-Lichtenbaum and Ate
pairings, which are well-known in cryptography, as an important tool.


title: The Deformed Consensus Protocol: Extended Version

abstract:
  This paper studies a generalization of the standard continuous-time consensus
protocol, obtained by replacing the Laplacian matrix of the communication graph
with the so-called deformed Laplacian. The deformed Laplacian is a
second-degree matrix polynomial in the real variable 's' which reduces to the
standard Laplacian for 's' equal to unity. The stability properties of the
ensuing deformed consensus protocol are studied in terms of parameter 's' for
some special families of undirected and directed graphs, and for arbitrary
graph topologies by leveraging the spectral theory of quadratic eigenvalue
problems. Examples and simulation results are provided to illustrate our
theoretical findings.


title:
Dynamic Amelioration of Resolution Mismatches for Local Feature Based
  Identity Inference

abstract:
  While existing face recognition systems based on local features are robust to
issues such as misalignment, they can exhibit accuracy degradation when
comparing images of differing resolutions. This is common in surveillance
environments where a gallery of high resolution mugshots is compared to low
resolution CCTV probe images, or where the size of a given image is not a
reliable indicator of the underlying resolution (eg. poor optics). To alleviate
this degradation, we propose a compensation framework which dynamically chooses
the most appropriate face recognition system for a given pair of image
resolutions. This framework applies a novel resolution detection method which
does not rely on the size of the input images, but instead exploits the
sensitivity of local features to resolution using a probabilistic multi-region
histogram approach. Experiments on a resolution-modified version of the
"Labeled Faces in the Wild" dataset show that the proposed resolution detector
frontend obtains a 99% average accuracy in selecting the most appropriate face
recognition system, resulting in higher overall face discrimination accuracy
(across several resolutions) compared to the individual baseline face
recognition systems.


title:
Dynamical barriers of pure and random ferromagnetic Ising models on
  fractal lattices

abstract:
  We consider the stochastic dynamics of the pure and random ferromagnetic
Ising model on the hierarchical diamond lattice of branching ratio $K$ with
fractal dimension $d_f=(\ln (2K))/\ln 2$. We adapt the Real Space
Renormalization procedure introduced in our previous work [C. Monthus and T.
Garel, J. Stat. Mech. P02037 (2013)] to study the equilibrium time $t_{eq}(L)$
as a function of the system size $L$ near zero-temperature. For the pure Ising
model, we obtain the behavior $t_{eq}(L) \sim L^{\alpha} e^{\beta 2J L^{d_s}} $
where $d_s=d_f-1$ is the interface dimension, and we compute the prefactor
exponent $\alpha$. For the random ferromagnetic Ising model, we derive the
renormalization rules for dynamical barriers $B_{eq}(L) \equiv (\ln
t_{eq}/\beta)$ near zero temperature. For the fractal dimension $d_f=2$, we
obtain that the dynamical barrier scales as $ B_{eq}(L)= c L+L^{1/2} u$ where
$u$ is a Gaussian random variable of non-zero-mean. While the non-random term
scaling as $L$ corresponds to the energy-cost of the creation of a system-size
domain-wall, the fluctuation part scaling as $L^{1/2}$ characterizes the
barriers for the motion of the system-size domain-wall after its creation. This
scaling corresponds to the dynamical exponent $\psi=1/2$, in agreement with the
conjecture $\psi=d_s/2$ proposed in [C. Monthus and T. Garel, J. Phys. A 41,
115002 (2008)]. In particular, it is clearly different from the droplet
exponent $\theta \simeq 0.299$ involved in the statics of the random
ferromagnet on the same lattice.


title: Splitting of low rank ACM bundles on hypersurfaces of high dimension

abstract:
  Let $X$ be a smooth projective hypersurface. In this note we show that any
rank 3 arithmetically Cohen-Macaulay vector bundle over $X$ splits when dim $X
\geq 7$. We also find a splitting criterion for rank 4 arithmetically
Cohen-Macaulay vector bundles on $X$ when dim $X \geq 9$.


title: Energy and lifetime of resonant states with real basis sets

abstract:
  Using a probabilistic interpretation of resonant states, we propose a formula
useful to calculate the lifetime of a resonance using square-integrable real
basis-set expansion techniques. Our approach does not require an estimation of
the density of states. The method is illustrated with calculations of $s$ and
$p$ resonant-state energies and lifetimes.


title: Infinitesimals, Imaginaries, Ideals, and Fictions

abstract:
  Leibniz entertained various conceptions of infinitesimals, considering them
sometimes as ideal things and other times as fictions. But in both cases, he
compares infinitesimals favorably to imaginary roots. We agree with the
majority of commentators that Leibniz's infinitesimals are fictions rather than
ideal things. However, we dispute their opinion that Leibniz's infinitesimals
are best understood as logical fictions, eliminable by paraphrase. This
so-called syncategorematic conception of infinitesimals is present in Leibniz's
texts, but there is an alternative, formalist account of infinitesimals there
too. We argue that the formalist account makes better sense of the analogy with
imaginary roots and fits better with Leibniz's deepest philosophical
convictions. The formalist conception supports the claim of Robinson and others
that the philosophical foundations of nonstandard analysis and Leibniz's
calculus are cut from the same cloth.


title:
Long-lived oscillatory incoherent electron dynamics in molecules:
  trans-polyacetylene oligomers

abstract:
  We identify an intriguing feature of the electron-vibrational dynamics of
molecular systems via a computational examination of \emph{trans}-polyacetylene
oligomers. Here, via the vibronic interactions, the decay of an electron in the
conduction band resonantly excites an electron in the valence band, and vice
versa, leading to oscillatory exchange of electronic population between two
distinct electronic states that lives for up to tens of picoseconds. The
oscillatory structure is reminiscent of beating patterns between quantum states
and is strongly suggestive of the presence of long-lived molecular electronic
coherence. Significantly, however, a detailed analysis of the electronic
coherence properties shows that the oscillatory structure arises from a purely
incoherent process. These results were obtained by propagating the coupled
dynamics of electronic and vibrational degrees of freedom in a mixed
quantum-classical study of the Su-Schrieffer-Heeger Hamiltonian for
polyacetylene. The incoherent process is shown to occur between degenerate
electronic states with distinct electronic configurations that are indirectly
coupled via a third auxiliary state by the vibronic interactions. A discussion
of how to construct electronic superposition states in molecules that are truly
robust to decoherence is also presented.


title:
Leading finite-size effects on some three-point correlators in
  TsT-deformed AdS_5 x S^5

abstract:
  We compute the leading finite-size effects on the normalized structure
constants in semiclassical three-point correlation functions of two finite-size
giant magnon string states and three different types of "light" states -
primary scalar operators, dilaton operator with nonzero momentum and singlet
scalar operators on higher string levels. This is done for the case of
TsT-transformed, or gamma-deformed, AdS_5 x S^5 string theory background, dual
to N = 1 super Yang-Mills theory in four dimensions, arising as an exactly
marginal deformation of N = 4 super Yang-Mills.


title:
HATS-2b: A transiting extrasolar planet orbiting a K-type star showing
  starspot activity

abstract:
  We report the discovery of HATS-2b, the second transiting extrasolar planet
detected by the HATSouth survey. HATS-2b is moving on a circular orbit around a
V=13.6 mag, K-type dwarf star (GSC 6665-00236), at a separation of 0.0230 \pm
0.0003 AU and with a period of 1.3541 days. The planetary parameters have been
robustly determined using a simultaneous fit of the HATSouth,
MPG/ESO~2.2\,m/GROND, Faulkes Telescope South/Spectral transit photometry and
MPG/ESO~2.2\,m/FEROS, Euler~1.2\,m/CORALIE, AAT~3.9\,m/CYCLOPS radial-velocity
measurements. HATS-2b has a mass of 1.37 \pm 0.16 M_J, a radius of 1.14 \pm
0.03 R_J and an equilibrium temperature of 1567 \pm 30 K. The host star has a
mass of 0.88 \pm 0.04 M_Sun, radius of 0.89 \pm 0.02 R_Sun and shows starspot
activity. We characterized the stellar activity by analysing two photometric
follow-up transit light curves taken with the GROND instrument, both obtained
simultaneously in four optical bands (covering the wavelength range of
3860-9520 \AA). The two light curves contain anomalies compatible with
starspots on the photosphere of the parent star along the same transit chord.


title: Robust price bounds for the forward starting straddle

abstract:
  In this article we consider the problem of giving a robust,
model-independent, lower bound on the price of a forward starting straddle with
payoff $|F_{T_1} - F_{T_0}|$ where $0<T_0<T_1$. Rather than assuming a model
for the underlying forward price $(F_t)_{t \geq 0}$, we assume that call prices
for maturities $T_0<T_1$ are given and hence that the marginal laws of the
underlying are known. The primal problem is to find the model which is
consistent with the observed call prices, and for which the price of the
forward starting straddle is minimised. The dual problem is to find the
cheapest semi-static subhedge.
  Under an assumption on the supports of the marginal laws, but no assumption
that the laws are atom-free or in any other way regular, we derive explicit
expressions for the coupling which minimises the price of the option, and the
form of the semi-static subhedge.


title: Charged particle motion in Kerr-Newmann space-times

abstract:
  The motion of charged test-particles in the gravitational field of a rotating
and electromagnetically charged black hole as described by the Kerr-Newman
metric is considered. We completely classify the colatitudinal and radial
motion on the extended manifold $-\infty \leq r \leq \infty$, including orbits
crossing the horizons or $r=0$. Analytical solutions of the equations of motion
in terms of elliptic functions are presented which are valid for all types of
orbits.


title: Hadronic Resonances in Lattice QCD

abstract:
  I discuss how masses and widths of hadron resonances are extracted from
lattice QCD. Recent lattice results on the light, strange and charm meson
resonances are reviewed. Their properties are revealed by simulating the
corresponding scattering channels pi-pi, K-pi and D-pi on the lattice and
extracting the scattering phase shifts. In particular we address the resonances
rho, D0*(2400), D1(2430), K*, kappa and K0*(1430).


title: Backward Path Growth for Efficient Mobile Sequential Recommendation

abstract:
  The problem of mobile sequential recommendation is presented to suggest a
route connecting some pick-up points for a taxi driver so that he/she is more
likely to get passengers with less travel cost. Essentially, a key challenge of
this problem is its high computational complexity. In this paper, we propose a
dynamical programming based method to solve this problem. Our method consists
of two separate stages: an offline pre-processing stage and an online search
stage. The offline stage pre-computes optimal potential sequence candidates
from a set of pick-up points, and the online stage selects the optimal driving
route based on the pre-computed sequences with the current position of an empty
taxi. Specifically, for the offline pre-computation, a backward incremental
sequence generation algorithm is proposed based on the iterative property of
the cost function. Simultaneously, an incremental pruning policy is adopted in
the process of sequence generation to reduce the search space of the potential
sequences effectively. In addition, a batch pruning algorithm can also be
applied to the generated potential sequences to remove the non-optimal ones of
a certain length. Since the pruning effect continuously increases with the
increase of the sequence length, our method can search the optimal driving
route efficiently in the remaining potential sequence candidates. Experimental
results on real and synthetic data sets show that the pruning percentage of our
method is significantly improved compared to the state-of-the-art methods,
which makes our method can be used to handle the problem of mobile sequential
recommendation with more pick-up points and to search the optimal driving
routes in arbitrary length ranges.


title:
On Automorphisms and Subtowers of an asymptotically optimal Tower of
  Function Fields

abstract:
  In this article we investigate the automorphism group of an asymptotically
optimal tower of function fields introduced by Garcia and Stichtenoth. In
particular we provide a detailed description of the decomposition group of some
rational places. This group acts on the algebraic-geometric standard codes
obtained by the Garcia-Stichtenoth tower exceeding the Gilbert-Varshamov bound.
The fields fixed by the decomposition groups form an asymptotically optimal
non-Galois subtower, which has been first found by Bezerra and Garcia and
yields an improvement for computing codes above the Gilbert-Varshamov bound. In
this article we also describe its proportionality to the Garcia-Stichtenoth
tower and obtain new precise results on its rational places and their
Weierstra{\ss} semigroups.


title: Inhomogeneous "longitudinal" plane waves in a deformed elastic material

abstract:
  A homogeneous isotropic compressible Hadamard material has the property that
an infinitesimal longitudinal homogeneous plane wave may propagate in every
direction when the material is maintained in a state of arbitrary finite static
homogeneous deformation. Here, as regards the wave, 'homogeneous' means that
the direction of propagation of the wave is parallel to the direction of
eventual attenuation and 'longitudinal' means that the wave is linearly
polarized in a direction parallel to the direction of propagation. In other
words, the displacement is of the form u = n cos k(n.x - ct), where n is a real
vector.
  It is seen that the Hadamard material is the most general one for which a
'longitudinal' inhomogeneous plane wave may also propagate in any direction of
a predeformed body. Here, 'inhomogeneous' means that the wave is attenuated in
a direction distinct from the direction of propagation and 'longitudinal' means
that the wave is elliptically polarized in the plane containing these two
directions. In other words, the displacement is of the form u = Re {S exp[i
(omega S.x - ct)]}, where S is a complex vector (or bivector).
  Then a Generalized Hadamard material is introduced. It is the most general
homogeneous isotropic compressible material which allows the propagation of
infinitesimal 'longitudinal' inhomogeneous plane circularly polarized waves for
all choices of the isotropic directional bivector.
  Finally, the most general forms of response functions are found for
homogeneously deformed isotropic elastic materials in which 'longitudinal'
inhomogeneous plane waves may propagate with a circular polarization in each of
the two planes of central circular section of the B^n-ellipsoid, where B is the
left Cauchy-Green strain tensor corresponding to the primary pure homogeneous
deformation.


title:
On one dimensional inverse problems arising from polarimetric
  measurements of nematic liquid crystals

abstract:
  We revisit the problem of determining dielectric parameters in layered
nematic liquid crystals from polarimetric measurements originally introduced by
Lionheart & Newton. After a detailed analysis of the model, of the scales
involved, and of natural obstacles to the reconstruction of more than one
dielectric parameters, we produce two simple one-dimensional inverse problems
which can be studied without any expertise in liquid crystals. We then confirm
that very little can be recovered about the internal configuration of smooth
dielectric parameters from these measurements, and give a uniqueness result for
one of the two problem, when the unknown parameter satisfies a monotonicity
property. In that case, the available data can be expressed in terms of Laplace
and Hankel transforms.


title: The study of tuning system for BEPC II

abstract:
  Tuning system plays a very important role when superconducting cavity works.
It cooperates with other control loops, to adjust the frequency of cavity with
high precision, reduce the reflection power, guarantee the stability of beam
and ensure the safety of superconducting cavity. This paper focuses mainly on
the tuning system working principle, the working state and problems that BEPC
(Beijing Electron Positron Collider) II has encountered during operation.


title:
The correlation structure of local cortical networks intrinsically
  results from recurrent dynamics

abstract:
  The co-occurrence of action potentials of pairs of neurons within short time
intervals is known since long. Such synchronous events can appear time-locked
to the behavior of an animal and also theoretical considerations argue for a
functional role of synchrony. Early theoretical work tried to explain
correlated activity by neurons transmitting common fluctuations due to shared
inputs. This, however, overestimates correlations. Recently the recurrent
connectivity of cortical networks was shown responsible for the observed low
baseline correlations. Two different explanations were given: One argues that
excitatory and inhibitory population activities closely follow the external
inputs to the network, so that their effects on a pair of cells mutually
cancel. Another explanation relies on negative recurrent feedback to suppress
fluctuations in the population activity, equivalent to small correlations. In a
biological neuronal network one expects both, external inputs and recurrence,
to affect correlated activity. The present work extends the theoretical
framework of correlations to include both contributions and explains their
qualitative differences. Moreover the study shows that the arguments of fast
tracking and recurrent feedback are not equivalent, only the latter correctly
predicts the cell-type specific correlations.


title:
Correlations between spin accumulation and degree of time-inverse
  breaking for electron gas in solid

abstract:
  It is shown that the electron spin may not be conserved after a
spin-independent scattering. This fact strongly limits the validity of the
classical model of spin-up/spin-down bands, which has been used for description
of magnetic properties of conduction electrons. It is shown that it is possible
to divide all conduction electrons into two group distinguished by their
symmetry for time reversal. The number of electrons in each group is conserved
after a spin-independent scattering. This makes it convenient to use these
groups for describing of the magnetic properties of conduction electrons. The
energy distribution of spins, the Pauli paramagnetism and the spin distribution
in the ferromagnetic metals are described within the presented model. The
effects of spin torque and spin-torque current are described. The origin of
spin-transfer torque is explained within presented model.


title:
New families of completely transitive codes and distance transitive
  graphs

abstract:
  In this paper new infinite families of linear binary completely transitive
codes are presented. They have covering radius $\rho = 3$ and 4, and are a half
part of the binary Hamming and the binary extended Hamming code of length
$n=2^m-1$ and $2^m$, respectively, where $m$ is even. From these new completely
transitive codes, in the usual way, i.e., as coset graphs, new presentations of
infinite families of distance transitive coset graphs of diameter three and
four, respectively, are constructed.


title:
A hierarchical time-splitting approach for solving finite-time optimal
  control problems

abstract:
  We present a hierarchical computation approach for solving finite-time
optimal control problems using operator splitting methods. The first split is
performed over the time index and leads to as many subproblems as the length of
the prediction horizon. Each subproblem is solved in parallel and further split
into three by separating the objective from the equality and inequality
constraints respectively, such that an analytic solution can be achieved for
each subproblem. The proposed solution approach leads to a nested decomposition
scheme, which is highly parallelizable. We present a numerical comparison with
standard state-of-the-art solvers, and provide analytic solutions to several
elements of the algorithm, which enhances its applicability in fast large-scale
applications.


title: Thermopower in the quantum Hall regime

abstract:
  We consider the effect of disorder on the themopower in quantum Hall systems.
For a sample in the Corbino geometry, where dissipative currents are not
carried by edge states, we find that thermopower behaves at high temperatures
like a system with a gap and has a maximum which increases as the temperature
is reduced. At lower temperatures this maximum reduces as a function of
temperature as a result of tunneling across saddle points in the background
potential. Our model assumes that the mean saddle point height varies linearly
with the deviation in filling factor from the quantized value. We test this
hypothesis against observations for the dissipative electrical conductance as a
function of temperature and field and find good agreement with experiment
around the minimum.


title:
Modification of Proton Velocity Distributions by Alfvenic Turbulence in
  the Solar Wind

abstract:
  In the present paper, the proton velocity distribution function (VDF)in the
solar wind is determined by solving numerically the kinetic evolution equation.
We compare the results obtained when considering the effects of ex- ternal
forces and Coulomb collisions with those obtained by adding effects of Alfven
wave turbulence. We use Fokker-Planck diffusion terms due to Alfvenic
turbulence, which take into account observed turbulence spectra and kinetic
effects of finite proton gyroradius. Assuming a displaced Maxwellian for the
proton VDF at the simulation boundary at 14 solar radii, we show that the
turbulence leads to a fast (within several solar radii) development of the
anti-sunward tail in the proton VDF. Our results provide a natural explanation
for the nonthermal tails in the proton VDFs, which are often observed in-situ
in the solar wind beyond 0.3 AU.


title:
Stellar electron-capture rates in pf-shell nuclei from quasiparticle
  random-phase approximation calculations

abstract:
  Electron-capture rates at different density and temperature conditions are
evaluated for a set of pf-shell nuclei representative of the constituents in
presupernova formations. The nuclear structure part of the problem is described
within a quasiparticle random-phase approximation based on a deformed Skyrme
Hartree-Fock selfconsistent mean field with pairing correlations and residual
interactions in particle-hole and particle-particle channels. The energy
distributions of the Gamow-Teller strength are evaluated and compared to
benchmark shell-model calculations and experimental data extracted from
charge-exchange reactions. The model dependence of the weak rates are discussed
and the various sensitivities to both density and temperature are analyzed.


title: Circumstellar disks during various evolutionary stages

abstract:
  Disks are ubiquitous in stellar astronomy, and play a crucial role in the
formation and evolution of stars. In this contribution we present an overview
of the most recent results, with emphasis on high spatial and spectral
resolution. We will start with a general discussion on direct versus indirect
detection of disks, and then traverse the HR diagram starting with the pre-Main
Sequence and ending with evolved stars.


title:
On the origin of orbital period change in WY Cancri: a genuine angular
  momentum loss?

abstract:
  WY Cancri is a short-period ($P$=0.829 d) eclipsing RS Canum Venaticorum
stars, and both components are late-type stars. Recently, observations provided
by photometric observations and light time minima show that the orbital period
of WY Cancri is experiencing a secular decrease at a rate of ${\rm d} P/{\rm
d}t=-1.2\times10^{-7}\rm d yr^{-1}$. In this Letter, we attempt to investigate
if the period change of WY Cancri can originate from the angular momentum loss.
In calculation, we assume that this source has a high wind loss rate of
$\sim10^{-10} \rm M_{\odot} yr^{-1}$. To account for the observation, magnetic
braking demands a strong surface magnetic field of $\gtrsim 10000$ G like Ap/Bp
stars. Furthermore, if this source may be surrounded by a circumbinary disk,
and 6% of the wind loss feeds the disk, tidal torque between the disk and the
binary can offer the observed angular momentum loss rate. Such a strong
magnetic field or an extremely high wind input fraction seem to be highly
unlikely.


title:
The Mass-Metallicity relation explored with CALIFA: I. Is there a
  dependence on the star formation rate?

abstract:
  We present the results on the study of the global and local M-Z relation
based on the first data available from the CALIFA survey (150 galaxies). This
survey provides integral field spectroscopy of the complete optical extent of
each galaxy (up to 2-3 effective radii), with enough resolution to separate
individual HII regions and/or aggregations. Nearly $\sim$3000 individual HII
regions have been detected. The spectra cover the wavelength range between
[OII]3727 and [SII]6731, with a sufficient signal-to-noise to derive the oxygen
abundance and star-formation rate associated with each region. In addition, we
have computed the integrated and spatially resolved stellar masses (and surface
densities), based on SDSS photometric data. We explore the relations between
the stellar mass, oxygen abundance and star-formation rate using this dataset.
  We derive a tight relation between the integrated stellar mass and the
gas-phase abundance, with a dispersion smaller than the one already reported in
the literature ($\sigma_{\Delta{\rm log(O/H)}}=$0.07 dex). Indeed, this
dispersion is only slightly larger than the typical error derived for our
oxygen abundances. However, we do not find any secondary relation with the
star-formation rate, other than the one induced due to the primary relation of
this quantity with the stellar mass. We confirm the result using the $\sim$3000
individual HII regions, for the corresponding local relations.
  Our results agree with the scenario in which gas recycling in galaxies, both
locally and globally, is much faster than other typical timescales, like that
of gas accretion by inflow and/or metal loss due to outflows. In essence,
late-type/disk dominated galaxies seem to be in a quasi-steady situation, with
a behavior similar to the one expected from an instantaneous
recycling/closed-box model.


title: Generalized states in SFT

abstract:
  The search for analytic solutions in open string fields theory \`a la Witten
often meets with singular expressions, which need an adequate mathematical
formalism to be interpreted. In this paper we discuss this problem and propose
a way to resolve the related ambiguities. Our claim is that a correct
interpretation requires a formalism similar to distribution theory in
functional analysis. To this end we concretely construct a locally convex space
of test string states together with the dual space of functionals. We show that
the above suspicious expressions can be identified with well defined elements
of the dual.


title:
Temperature dependence of plasmon resonances in spheroidal metal
  nanoparticles

abstract:
  The effect of the electron temperature on both the light absorption and the
scattering by metal nanoparticles (MNs) with excitation of the surface plasmon
electron vibrations is studied in the framework of the kinetic theory. The
formulae for electroconductivity and polarizability tensors are derived for
finite temperatures of an electron gas. The electrical conductivity and the
halfwidth of the surface plasmon resonance are studied in detail for a
spherical MN. Depending on the size of MN, the efficiencies of light absorption
and scattering with the temperature change are investigated. It is found, in
particular, that the absorption efficiency can both increase and decrease with
a temperature drop. The derived formulas make it possible to analytically
calculate various optical and transport phenomena for MNs of any spheroidal
shape embedded in any dielectric media.


title: Two-player preplay negotiation games with conditional offers

abstract:
  We consider an extension of strategic normal form games with a phase before
the actual play of the game, where players can make binding offers for transfer
of utilities to other players after the play of the game, contingent on the
recipient playing the strategy indicated in the offer. Such offers transform
the payoff matrix of the original game but preserve its non-cooperative nature.
The type of offers we focus on here are conditional on a suggested 'matching
offer' of the same kind made in return by the receiver. Players can exchange a
series of such offers, thus engaging in a bargaining process before a strategic
normal form game is played.
  In this paper we study and analyze solution concepts for two-player normal
form games with such preplay negotiation phase, under several assumptions for
the bargaining power of the players, such as the possibility of withdrawing
previously made offers and opting out from the negotiation process, as well as
the value of time for the players in such negotiations. We obtain results
describing the possible solutions of such bargaining games and analyze the
degrees of efficiency and fairness that can be achieved in such negotiation
process.


title:
Indirect coupling between localized magnetic moments in triangular
  graphene nanoflakes

abstract:
  The indirect, charge-carrier mediated coupling between localized magnetic
moments is studied for graphene nanoflakes of triangular shape and zig-zag
edge. The characteristic feature of such nanoflakes is the presence of a shell
of zero-energy states in the electronic spectrum. The tight-binding Hamiltonian
supplemented with a Hubbard term is used for electronic structure calculations.
The indirect RKKY (Ruderman-Kittel-Kasuya-Yosida) coupling energy is derived
from the total electronic energy of the system in a non-perturbative way. The
attention is focused on the on-site and plaquette impurities situated along the
edge. The charge doping is also taken into account. It is found that the
zero-energy states may give rise to a coupling mechanism which is describable
by a first-order perturbation calculus and can yield robust indirect coupling
of both ferro- and antiferromagnetic character, which dominates ovet the usual
RKKY mechanism. The numerical results obtained emphasize the importance of the
Hubbard term and the effect of the charge doping on the coupling.


title:
Bifurcation diagram and stability for a one-parameter family of planar
  vector fields

abstract:
  We consider the 1-parameter family of planar quintic systems, $\dot x=
y^3-x^3$, $\dot y= -x+my^5$, introduced by A. Bacciotti in 1985. It is known
that it has at most one limit cycle and that it can exist only when the
parameter $m$ is in $(0.36,0.6)$. In this paper, using the Bendixon-Dulac
theorem, we give a new unified proof of all the previous results, we shrink
this to $(0.547,0.6)$, and we prove the hyperbolicity of the limit cycle. We
also consider the question of the existence of polycycles. The main interest
and difficulty for studying this family is that it is not a semi-complete
family of rotated vector fields. When the system has a limit cycle, we also
determine explicit lower bounds of the basin of attraction of the origin.
Finally we answer an open question about the change of stability of the origin
for an extension of the above systems.


title: Effect of Mask Regions on Weak Lensing Statistics

abstract:
  Sky masking is unavoidable in wide-field weak lensing observations. We study
how masks affect the measurement of statistics of matter distribution probed by
weak gravitational lensing. We first use 1000 cosmological ray-tracing
simulations to examine in detail the impact of masked regions on the weak
lensing Minkowski Functionals (MFs). We consider actual sky masks used for a
Subaru Suprime-Cam imaging survey. The masks increase the variance of the
convergence field and the expected values of the MFs are biased. The bias then
affects the non-Gaussian signals induced by the gravitational growth of
structure. We then explore how masks affect cosmological parameter estimation.
We calculate the cumulative signal-to-noise ratio S/N for masked maps to study
the information content of lensing MFs. We show that the degradation of S/N for
masked maps is mainly determined by the effective survey area. We also perform
simple chi^2 analysis to show the impact of lensing MF bias due to masked
regions. Finally, we compare ray-tracing simulations with data from a Subaru 2
deg^2 survey in order to address if the observed lensing MFs are consistent
with those of the standard cosmology. The resulting chi^2/n_dof = 29.6/30 for
three combined MFs, obtained with the mask effects taken into account, suggests
that the observational data are indeed consistent with the standard LambdaCDM
model. We conclude that the lensing MFs are powerful probe of cosmology only if
mask effects are correctly taken into account.


title:
Could strange stars be in the color-flavor-locked phase: Tested by their
  thermal evolutions

abstract:
  The thermal evolution of strange stars in both normal and color-flavor-locked
(CFL) phases are investigated together with the evolutions of the stellar
rotation and the r-mode instability. The heating effects due to the
deconfinement transition of the stellar crust and the dissipation of the
r-modes are considered. As a result, the cooling of the stars in the normal
phase is found to be not very different from the standard one. In contrast, for
the stars in the CFL phase, a big bump during the first hundred years and a
steep decay ($\sim$7% in ten years) at the ages of $\sim10^{4-6}$ yrs are
predicted in their thermal evolution curves. These unique features provide an
effective observational test for determining whether or not the CFL phase is
reached in strange stars. This thermal test method is independent of and
complementary to the rotational test method, which is a direct consequence of
the r-mode instability.


title: Quasielastic scattering with the Relativistic Green's Function approach

abstract:
  A relativistic model for quasielastic (QE) lepton-nucleus scattering is
presented. The effects of final-state interactions (FSI) between the ejected
nucleon and the residual nucleus are described in the relativistic Green's
function (RGF) model where FSI are consistently described with exclusive
scattering using a complex optical potential. The results of the model are
compared with experimental results of electron and neutrino scattering.


title: Canonical transformations for fermions in superanalysis

abstract:
  Canonical transformations (Bogoliubov transformations) for fermions with an
infinite number of degrees of freedom are studied within a calculus of
superanalysis. A continuous representation of the orthogonal group is
constructed on a Grassmann module extension of the Fock space. The pull-back of
these operators to the Fock space yields a unitary ray representation of the
group that implements the Bogoliubov transformations.


title:
Towards the spectrum of low-lying particles in supersymmetric Yang-Mills
  theory

abstract:
  We present the current results of our simulations of N=1 supersymmetric
Yang-Mills theory on a lattice. The masses of the gluino-glue particle, the
a-eta-prime, the a-f0 meson, and the scalar glueball are obtained at finer
lattice spacing than before, and extrapolations towards vanishing gluino mass
are made. The calculations employ different levels of stout smearing. The
statistical accuracy as well as the control of finite size effects and lattice
artefacts are better than in previous investigations. Taking the statistical
and systematic uncertainties into account, the extrapolations towards vanishing
gluino mass of the masses of the fermionic and bosonic states in our present
calculations are consistent with the formation of degenerate supermultiplets.


title:
Two-dimensional simulations of temperature and current-density
  distribution in electromigrated structures

abstract:
  We report on the application of a feedback-controlled electromigration
technique for the formation of nanometer-sized gaps in mesoscopic gold wires
and rings. The effect of current density and temperature, linked via Joule
heating, on the resulting gap size is investigated. Experimentally, a good
thermal coupling to the substrate turned out to be crucial to reach electrode
spacings below 10 nm and to avoid overall melting of the nanostructures. This
finding is supported by numerical calculations of the current-density and
temperature profiles for structure layouts subjected to electromigration. The
numerical method can be used for optimizing the layout so as to predetermine
the location where electromigation leads to the formation of a gap.


title: On sampling SCJ rearrangement scenarios

abstract:
  The Single Cut or Join (SCJ) operation on genomes, generalizing chromosome
evolution by fusions and fissions, is the computationally simplest known model
of genome rearrangement. While most genome rearrangement problems are already
hard when comparing three genomes, it is possible to compute in polynomial time
a most parsimonious SCJ scenario for an arbitrary number of genomes related by
a binary phylogenetic tree.
  Here we consider the problems of sampling and counting the most parsimonious
SCJ scenarios. We show that both the sampling and counting problems are easy
for two genomes, and we relate SCJ scenarios to alternating permutations.
However, for an arbitrary number of genomes related by a binary phylogenetic
tree, the counting and sampling problems become hard. We prove that if a Fully
Polynomial Randomized Approximation Scheme or a Fully Polynomial Almost Uniform
Sampler exist for the most parsimonious SCJ scenario, then RP = NP.
  The proof has a wider scope than genome rearrangements: the same result holds
for parsimonious evolutionary scenarios on any set of discrete characters.


title: Magnetization transport in spin ladders and next-nearest-neighbor chains

abstract:
  We study magnetization transport at high temperatures in several spin ladder
systems as well as in next-nearest-neighbor coupled spin chains. In the
integrable ladder considered we analytically show that the transport is
ballistic in sectors with nonzero average magnetization, while numerical
simulations of a nonequilibrium stationary setting indicate an anomalous
transport in the zero magnetization (half-filling) sector. For other systems,
isotropic Heisenberg ladder and spin chains, showing eigenlevel repulsion
typical of quantum chaotic systems, numerical simulations indicate diffusive
transport.


title: Binary Hypothesis Testing Game with Training Data

abstract:
  We introduce a game-theoretic framework to study the hypothesis testing
problem, in the presence of an adversary aiming at preventing a correct
decision. Specifically, the paper considers a scenario in which an analyst has
to decide whether a test sequence has been drawn according to a probability
mass function (pmf) P_X or not. In turn, the goal of the adversary is to take a
sequence generated according to a different pmf and modify it in such a way to
induce a decision error. P_X is known only through one or more training
sequences. We derive the asymptotic equilibrium of the game under the
assumption that the analyst relies only on first order statistics of the test
sequence, and compute the asymptotic payoff of the game when the length of the
test sequence tends to infinity. We introduce the concept of
indistinguishability region, as the set of pmf's that can not be distinguished
reliably from P_X in the presence of attacks. Two different scenarios are
considered: in the first one the analyst and the adversary share the same
training sequence, in the second scenario, they rely on independent sequences.
The obtained results are compared to a version of the game in which the pmf P_X
is perfectly known to the analyst and the adversary.


title: B-physics results from Tevatron

abstract:
  This review summarizes the most important results in B physics obtained at
the Tevatron. They include the discovery of the new B hadrons, the measurement
of their masses and lifetimes, the measurement of the oscillation frequency of
$\Bs$ meson, the search for its rare decay $\Bs \to \mu^+ \mu^-$, and the study
of the CP asymmetry in decays and mixing of $B$ mesons.


title: Epigenetic Tracking: a Model for Multicellular Biology

abstract:
  Epigenetic Tracking is a mathematical model of biological cells, originally
conceived to study embryonic development. Computer simulations proved the
capacity of the model to generate complex 3-dimensional cellular structures,
and the potential to reproduce the complexity typical of living beings. The
most distinctive feature of this model is the presence in the body of a
homogeneous distribution of stem cells, which are dinamically and continuously
created during development from non-stem cells and reside in niches. Embryonic
stem cells orchestrate early developmental events, adult stem cells direct late
developmental and regeneration events, ageing stem cells cause ageing and
cancer stem cells are responsible for cancer growth. The conceptual backbone
provided by Epigenetic Tracking brings together a wide range of biological
phenomena: for this reason, we think it can be proposed as a general model for
multicellular biology. Despite, or perhaps due to its theoretical origin, the
model allowed us to make predictions relevant to very diverse fields of
biology, such as transposable elements, and cancer-related patterns of gene
mutations. This paper contains a summary of the model and its implications.


title: Electronic phase separation in iron pnictides

abstract:
  A mechanism for electronic phase separation in iron pnictides is proposed. It
is based on the competition between commensurate and incommensurate
spin-density-wave phases in a system with an imperfect doping-dependent nesting
of a multi-sheeted Fermi surface. We model the Fermi surface by two elliptical
electron pockets and three circular hole pockets. The interaction between a
charge carrier in a hole band and a carrier in an electron band leads to the
formation of spin-density-wave order. The commensurate spin density wave in the
parent compound transforms to the incommensurate phase when doping is
introduced. We show that, for certain parameter values, the uniform state is
unstable with respect to phase separation. The resulting inhomogeneous state
consists of regions of commensurate and incommensurate spin-density-wave
phases. Our results are in qualitative agreement with recent observations of
incommensurate spin density waves and electronic inhomogeneity in iron
pnictides.


title: Hesiod's calendar and the star Spica

abstract:
  In Hesiod's calendar, circa 8th century BCE, the harvest times of cereals
were indicated by the heliacal rising of Pleiades (harvest) and by that of
Orion (thresh). We tried to verify which risings and settings of the brightest
stars could have been used as indicators in the previous millennia, taking into
account the precession and the dependence of the heliacal dates on the
latitude. In the second half of the 9th millennium BCE there was essentially
one bright star that could have been used both for the harvest (heliacal
setting of the star) and for the thresh (heliacal rising of the star): Spica,
i.e. ear (in Latin) of cereals. According to archaeologists, the domestication
of barley and wheat occurred in Near East at the end of the 9th millennium BCE.
Given the importance of the bright stars and asterisms for ancient farming
activities, we have therefore proposed that the identification of the star
alpha Virginis with an ear should date back to the beginning of Neolithic,
possibly well before the identification of the constellation (Virgo) with a
maiden.


title:
Helicity amplitudes for photoexcitation of nucleon resonances off
  neutrons

abstract:
  The helicity amplitudes $A^{1/2}_n$ and $A^{3/2}_n$ for the photoexcitation
of nucleon resonances off neutrons are determined in a multi-channel
partial-wave analysis.


title:
Phase diagrams and Thomas-Fermi estimates for spin-orbit coupled
  Bose-Einstein Condensates under rotation

abstract:
  We provide complete phase diagrams describing the ground state of a trapped
spinor BEC under the combined effects of rotation and a Rashba spin-orbit
coupling. The interplay between the different parameters (magnitude of
rotation, strength of the spin-orbit coupling and interaction) leads to a rich
ground state physics that we classify. We explain some features analytically in
the Thomas-Fermi approximation, writing the problem in terms of the total
density, total phase and spin. In particular, we analyze the giant skyrmion,
and find that it is of degree 1 in the strong segregation case. In some regions
of the phase diagrams, we relate the patterns to a ferromagnetic energy.


title: A characterization of limiting functions arising in mod-* convergence

abstract:
  In this note, we characterize the limiting functions in mod-Gausssian
convergence; our approach sheds a new light on the nature of mod-Gaussian
convergence as well. Our results in fact more generally apply to mod-*
convergence, where * stands for any family of probability distributions whose
Fourier transforms do not vanish. We moreover provide new examples, including
two new examples of (restricted) mod-Cauchy convergence from arithmetics
related to Dedekind sums and the linking number of modular geodesics.


title:
A Cram\'{e}r moderate deviation theorem for Hotelling's $T^2$-statistic
  with applications to global tests

abstract:
  A Cramer moderate deviation theorem for Hotelling's $T^2$-statistic is proved
under a finite $(3+\delta)$th moment. The result is applied to large scale
tests on the equality of mean vectors and is shown that the number of tests can
be as large as $e^{o(n^{1/3})}$ before the chi-squared distribution calibration
becomes inaccurate. As an application of the moderate deviation results, a
global test on the equality of m mean vectors based on the maximum of
Hotelling's $T^2$-statistics is developed and its asymptotic null distribution
is shown to be an extreme value type I distribution. A novel intermediate
approximation to the null distribution is proposed to improve the slow
convergence rate of the extreme distribution approximation. Numerical studies
show that the new test procedure works well even for a small sample size and
performs favorably in analyzing a breast cancer dataset.


title:
Synchronization of a Josephson junction array in terms of global
  variables

abstract:
  We consider an array of Josephson junctions with a common LCR-load.
Application of the Watanabe-Strogatz approach [Physica D, v. 74, p. 197 (1994)]
allows us to formulate the dynamics of the array via the global variables only.
For identical junctions this is a finite set of equations, analysis of which
reveals the regions of bistability of the synchronous and asynchronous states.
For disordered arrays with distributed parameters of the junctions, the problem
is formulated as an integro-differential equation for the global variables,
here stability of the asynchronous states and the properties of the transition
synchrony-asynchrony are established numerically.


title: Poisson Lie Sigma Models

abstract:
  A Manin triples (D; g; ~ g) is a bialgebra (g; ~ g which don't intersect each
others and a direct sum of this bialgebra D = g ~ g). If the corresponding Lie
groups have a Poisson structure, they are called Poisson-Lie groups. A
Poisson-Lie sigma models is an action (3.13) calculated by a Poisson vector eld
matrix. [3] have deduced the extremal eld which minimize the action of this
models, which gives the motion equation (3.19). We calculate here the action
and the equations of motion for some 6-dimensionals Manin triples and we give a
general formula for each 4-dimensional Manin triples. The 6-dimensional Manin
triples are (sl(2; C) sl(2; C) ; sl(2; C); sl(2; C)),(sl(2; C) sl(2; C) ; sl(2;
C)); sl(2; C),(sl(2; C); su(2; C); sb(2; C)) and (sl(2; C); sb(2; C); su(2;
C)).


title: No-go theorem in many body dissipative particle dynamics

abstract:
  Many body dissipative particle dynamics (MDPD) is a particle-based simulation
method in which the interaction potential is a sum of self energies depending
on locally-sampled density variables. This functional form gives rise to
density-dependent pairwise forces, however not all such force laws are
derivable from a potential and the integrability condition for this to be the
case provides a strong constraint. A strategy to assess the implications of
this constraint is illustrated here by the derivation of a useful no-go theorem
for multicomponent MDPD.


title: Object-Oriented Translation for Programmable Relational System (DRAFT)

abstract:
  The paper introduces the principles of object-oriented translation for target
machine which provides executing the sequences of elementary operations on
persistent data presented as a set of relations (programmable relational
system). The language of this target machine bases on formal operations of
relational data model. An approach is given to convert both the description of
complex object-oriented data structures and operations on these data, into a
description of relational structures and operations on them. The proposed
approach makes possible to extend the target relational language with commands
allowing data be described as a set of complex persistent objects of different
classes. Object views are introduced which allow relational operations be
applied to the data of complex objects. It is shown that any operation and
method can be executed on any group of the objects without explicit and
implicit iterators. Binding of both attributes and methods with their
polymorphic implementations are discussed. Classes can be co-used with
relations as scalar domains, in referential integrity constraints and in data
query operations.


title:
Universal mass limits on gluino and third-generation squarks in the
  context of Natural-like SUSY spectra

abstract:
  In this paper, we present results based on a combination of four inclusive
topology searches for supersymmetry (SUSY) from the CMS experiment, and use
this to determine universal mass limits on gluino and third-generation squarks
in the context of Natural-like SUSY spectra. The class of Natural-like SUSY
spectra considered follows the typical Natural SUSY model made up of a gluino,
third-generation squarks, and higgsino sparticles, but is extended to more
complex spectra containing sleptons. We show that the limits obtained from the
combination of inclusive topology searches are far more stable than those from
individual searches, with respect to the assumed underlying complexity of the
spectra. Hence, these limits can be considered as universal mass limits on
gluino and third-generation squarks, defined in the context of this broad class
of Natural-like SUSY spectra. Furthermore, we present our results using a
simple colour scheme that allows a straightforward interpretation of any
Natural-like SUSY spectrum with our limits.
  Complementing the final results of the 2011 searches based on 5
$\textrm{fb}^{-1}$ of integrated luminosity, with the first published results
from the 2012 searches using approximately 11 $\textrm{fb}^{-1}$, we find that
gluinos with a mass of $m_{\tilde{g}}\approx$ 1050 GeV and third-generation top
and bottom squarks with masses of $m_{\tilde{3G}}\approx$ 575 GeV are excluded
for low masses of the lightest SUSY particle (LSP). We also establish a
prediction of how these limits might evolve when the full 2012 data set is
analysed, with both the CMS and ATLAS experiments combined. The importance of
combining relevant inclusive topology searches, in order to make the most
universal interpretations possible, is a general recommendation for future
experimental searches at the LHC.


title:
Quantile-adaptive model-free variable screening for high-dimensional
  heterogeneous data

abstract:
  We introduce a quantile-adaptive framework for nonlinear variable screening
with high-dimensional heterogeneous data. This framework has two distinctive
features: (1) it allows the set of active variables to vary across quantiles,
thus making it more flexible to accommodate heterogeneity; (2) it is model-free
and avoids the difficult task of specifying the form of a statistical model in
a high dimensional space. Our nonlinear independence screening procedure
employs spline approximations to model the marginal effects at a quantile level
of interest. Under appropriate conditions on the quantile functions without
requiring the existence of any moments, the new procedure is shown to enjoy the
sure screening property in ultra-high dimensions. Furthermore, the
quantile-adaptive framework can naturally handle censored data arising in
survival analysis. We prove that the sure screening property remains valid when
the response variable is subject to random right censoring. Numerical studies
confirm the fine performance of the proposed method for various semiparametric
models and its effectiveness to extract quantile-specific information from
heteroscedastic data.


title:
Dense electron-positron plasmas and bursts of gamma-rays from
  laser-generated QED plasmas

abstract:
  In simulations of a 12.5PW laser (focused intensity I = 4x10^23W/cm^2)
striking a solid aluminium target 10% of the laser energy is converted to
gamma-rays. A dense electron-positron plasma is generated with a maximum
density of 10^26/m^3; seven orders of magnitude denser than pure e-e+ plasmas
generated with 1PW lasers. When the laser power is increased to 320PW (I =
10^25W/cm^2) 40% of the laser energy is converted to gamma-ray photons and 10%
to electron-positron pairs. In both cases there is strong feedback between the
QED emission processes and the plasma physics; the defining feature of the new
`QED-plasma' regime reached in these interactions.


title: Random groups contain surface subgroups

abstract: A random group contains many quasiconvex surface subgroups.


title: Open heavy flavour analysis with the ALICE experiment at LHC

abstract:
  The ALICE experiment at the LHC was taking data in proton-proton collisions
at the center-of-mass energy of 7 TeV starting from March till the end of
October 2010. First heavy-ion collisions were delivered during November 2010.
Among other particles, charmed and beauty mesons can be reconstructed by the
ALICE apparatus. Open heavy flavour mesons provide a powerful tool to study hot
quark matter produced in high energy heavy-ion collisions because their spectra
are expected to be affected by energy loss in the medium. Measuring such
particles is important also in proton-proton collisions. In this case they
provide a necessary reference for heavy-ion collisions and allow to test pQCD
predictions in a new energy domain. Different ways to reconstruct D and B
mesons are described together with adopted selection and analysis techniques. D
mesons in the central rapidity region are reconstructed via 2,3, and 4-prongs
hadronic decays and via single electrons. In the forward region, semi-muonic
decays are used to measure the production of D and B mesons. The first results
for D mesons, single electrons and single muons are reported.


title:
YIG thickness and frequency dependence of the spin-charge current
  conversion in YIG/Pt systems

abstract:
  We report the frequency dependence of the spin current emission in a hybrid
ferrimagnetic insulator/normal metal system as function of the insulating layer
thickness. The system is based on a yttrium iron garnet (YIG) film [0.2, 1, and
3 \mu m] grown by liquid-phase-epitaxy coupled with a spin current detector of
platinum [6 nm]. A strong YIG thickness dependence of the efficiency of the
spin pumping has been observed. The highest conversion factor \Delta V/P_{abs}
has been demonstrated for the thinner YIG (1.79 and 0.55 mV/mW^{-1} at 2.5 and
10 GHz, respectively) which presents an interest for the realisation of
YIG-based devices. A strong YIG thickness dependence of the efficiency of the
spin pumping has been also observed and we demonstrate the threshold frequency
dependence of the three-magnon splitting process.


title:
On the density of primes with a set of quadratic residues or
  non-residues in given arithmetic progression

abstract:
  Let $\mathcal{A}$ denote a finite set of arithmetic progressions of positive
integers and let $s \geq 2$ be an integer. If the cardinality of $\mathcal{A}$
is at least 2 and $U$ is the union formed by taking certain arithmetic
progressions of length $s$ from each element of $\mathcal{A}$, we calculate the
asymptotic density of the set of all prime numbers $p$ such that $U$ is a set
of quadratic residues (respectively, quadratic non-residues) of $p$.


title: Coupling of nitrogen vacancy centers in nanodiamonds by means of phonons

abstract:
  Realising controlled quantum dynamics via the magnetic interactions between
colour centers in diamond remains a challenge despite recent demonstrations for
nanometer separated pairs. Here we propose to use the intrinsic acoustical
phonons in diamond as a data bus for accomplishing this task. We show that for
nanodiamonds the electron-phonon coupling can take significant values that
together with mode frequencies in the THz range, can serve as a resource for
conditional gate operations. Based on these results we analyze how to use this
phonon-induced interaction for constructing quantum gates among the
electron-spin triplet ground states, introducing the phonon dependence via
Raman transitions. Combined with decoupling pulses this offers the possibility
for creating entangled states within nanodiamonds on the scale of several tens
of nanometers, a promising prerequisite for quantum sensing applications.


title: Smooth and non-smooth $AF$-algebras and problem on invariant measures

abstract:
  We separate the $AF$-algebras (correspondingly action of the countable groups
on Cantor sets) onto two classes ---- "completely smooth" for which the set of
all indecomposable traces (correspondingly list of all invariant ergodic
measures) has nice parametrization, and the second class --- "completely
non-smooth" for which the set of all traces (correspondingly set of all
invariant measures) is Poulsen simplex and therefore there is no suitable
parametrization of indecomposable traces, (ergodic measures) e.g.Choquet
boundary.
  Important example of the first type of $AF$-algebra is group algebra of
infinite symmetric group, and of the second type
  --- group algebra of some locally finite solvable group. The questions of
recognition of those cases are closely related to the orbit theory of dynamical
systems and theory of filtrations of sigma-fields in measure spaces and Borel
spaces.


title: Pion couplings of the Delta(1232)

abstract:
  We calculate the strong couplings of pions to the Delta(1232) resonance using
a QCD parameterization method that includes in addition to the usual one-quark
also two-quark and previously uncalculated three-quark operators. We find that
three-quark operators are necessary to obtain results consistent with the data
and other QCD based baryon structure models. Our results are also in
quantitative agreement with a model employing large D state admixtures to the
nucleon and Delta wave functions indicating that the pion-nucleon and
pion-Delta couplings are sensitive to the spatial shape of these baryons.


title:
Two-time, response-excitation moment equations for a cubic
  half-oscillator under Gaussian and cubic-Gaussian colored excitation. Part 1:
  The monostable case

abstract:
  In this paper a new method is presented for the formulation and solution of
two-time, response-excitation moment equations for a nonlinear dynamical system
excited by colored, Gaussian or non-Gaussian processes. Starting from equations
for the two-time moments (e.g. for Cxy(t,s), Cxx(t,s)), the method uses an
exact time-closure condition, in addition to a Gaussian moment closure, in
order to obtain a closed, non-local in time (causal) subsystem for the one-time
(t=s) moments. After solving this causal system, the two-time moments can be
calculated for all (t,s) pairs as well. The present method differs essentially
from the classical It\^o/FPK approach since it does not involve any specific
assumptions regarding the correlation structure of the excitation. In the case
where the input random process can be obtained as the solution of an It\^o
equation (as, e.g., happens with an Ornstein-Uhlenbeck process), the proposed
non-local system is localized, leading to moment equations identical with the
usual ones. The closed, non-local in time, moment system is numerically solved
by means of an appropriate, two-scale, iterative scheme, and numerical results
are presented for two families of colored stochastic excitations. The results
are confirmed by means of extensive Monte Carlo simulations. It is found that
both the correlation time and the details of the shape of the input random
function affect appreciable the response covariance. In the present paper we
focus on a monostable cubic half-oscillator, excited by a smoothly-correlated,
linear-plus-cubic-Gaussian (non-Gaussian) random input. The bistable case, as
well as more general nonlinear systems can be treated by the same method,
provided that a more elaborate moment closure will be used.


title: Cosmological effects of coupled dark matter

abstract:
  Many models have been studied that contain more than one species of dark
matter and some of these couple the Cold Dark Matter (CDM) to a light scalar
field. In doing this we introduce additional long range forces, which in turn
can significantly affect our estimates of cosmological parameters if not
properly accounted for. It is, therefore, important to study these models and
their resulting cosmological implications. We present a model in which a
fraction of the total cold dark matter density is coupled to a scalar field. We
study the background and perturbation evolution and calculate the resulting
Cosmic Microwave Background anisotropy spectra. The greater the fraction of
dark matter coupled to the scalar field and the stronger the coupling strength,
the greater the deviation of the background evolution from LCDM. Previous work,
with a single coupled dark matter species, has found an upper limit on the
coupling strength of order O(0.1). We find that with a coupling of this
magnitude more than half the dark matter can be coupled to a scalar field
without producing any significant deviations from LCDM.