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\section{Introduction} Spallation reactions, i.e. proton-induced reactions on heavy targets at a few hundred MeV, have been the subject of many studies since 1950. They are known to be a valuable tool for the study of the de-excitation of hot nuclei because, contrarily to reactions between heavy ions, they lead to th...
{ "timestamp": "2005-12-09T12:08:54", "yymm": "0503", "arxiv_id": "nucl-ex/0503021", "language": "en", "url": "https://arxiv.org/abs/nucl-ex/0503021" }
\section{Introduction} The purpose of this paper is to study the structure of the bounded derived category $\Dbcoh(\boldsymbol{E})$ of coherent sheaves on a singular irreducible projective curve $\boldsymbol{E}$ of arithmetic genus one. In the smooth case, such structure results are easily obtained from Atiyah's des...
{ "timestamp": "2006-02-14T17:10:40", "yymm": "0503", "arxiv_id": "math/0503496", "language": "en", "url": "https://arxiv.org/abs/math/0503496" }
\section{Introduction} \label{sec:intro} Kaonic atoms and kaonic nuclei carry important information concerning the $K^-$-nucleon interaction in nuclear medium. This information is very important to determine the constraints on kaon condensation in high density matter. The properties of kaons in nuclei are strongly...
{ "timestamp": "2005-08-25T03:10:23", "yymm": "0503", "arxiv_id": "nucl-th/0503039", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503039" }
\section{Introduction} \label{intro} There is the evident nigh affinity between the classical probability function and the Boolean function of the classical propositional logic \cite{LYN66}. These functions are differed by the range of value, only. That is if the range of values of the Boolean function shall be expande...
{ "timestamp": "2005-05-20T06:21:32", "yymm": "0503", "arxiv_id": "math/0503624", "language": "en", "url": "https://arxiv.org/abs/math/0503624" }
\section{Introduction} \mlabel{sec:intro} It is well-known that the natural functor from the category of associative algebras to that of Lie algebras and the adjoint functor play a fundamental role in the study of these algebraic structures and their applications. This paper establishes a similar relationship between...
{ "timestamp": "2007-05-31T19:49:29", "yymm": "0503", "arxiv_id": "math/0503647", "language": "en", "url": "https://arxiv.org/abs/math/0503647" }
\section{Introduction} \label{Introduction} In this article we prove new theorems which are higher-dimensional generalizations of the classical theorems of Siegel on integral points on affine curves and of Picard on holomorphic maps from $\mathbb{C}$ to affine curves. In the first section we will give the statements ...
{ "timestamp": "2005-03-30T10:19:28", "yymm": "0503", "arxiv_id": "math/0503699", "language": "en", "url": "https://arxiv.org/abs/math/0503699" }
\section{Introduction} It is common knowledge that Lifshitz formula \cite{19} describes the van der Waals and Casimir force acting between two thick plane parallel material plates separated by a gap of width $a$. According to this formula, the free energy of the van der Waals and Casimir interaction can be represented...
{ "timestamp": "2005-03-06T19:39:25", "yymm": "0503", "arxiv_id": "quant-ph/0503064", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503064" }
\section{Introduction} Communities of ecologically similar species that compete with each other solely for resources are often described by neutral community models (NCM) \cite{Hubbel,Bell,Chave,Norris}. These models proved to be successful and useful in describing many of the basic patterns of biodiversity such as th...
{ "timestamp": "2005-03-17T10:51:17", "yymm": "0503", "arxiv_id": "q-bio/0503026", "language": "en", "url": "https://arxiv.org/abs/q-bio/0503026" }
\section{From ASDYM equations to Einstein--Weyl structures} \setcounter{equation}{0} The idea of allowing infinite--dimensional groups of diffeomorphisms of some manifold $\Sigma$ as gauge groups provides a link between the Yang--Mills--Higgs theories on $\mathbb{R}^n$ and conformal gravity theories on $\mathbb{R...
{ "timestamp": "2005-06-10T19:44:19", "yymm": "0503", "arxiv_id": "nlin/0503030", "language": "en", "url": "https://arxiv.org/abs/nlin/0503030" }
\section{Introduction} Models of non-linear spatially extended systems exhibit a variety of spatial and temporal pattern forming phenomena. A subclass of these patterns are spatially localized structures \cite{rev1} that include pulses, solitons, fronts, and domain walls. The standard analysis of these localized struc...
{ "timestamp": "2005-08-24T23:54:38", "yymm": "0503", "arxiv_id": "nlin/0503039", "language": "en", "url": "https://arxiv.org/abs/nlin/0503039" }
\section{Introduction} Let $K,K'$ be closed convex pointed cones with non-empty interior, residing in finite-dimensional real vector spaces $E,E'$. Then an element $w \in E \otimes E'$ of the tensor product space is called {\sl separable} if it can be represented as a convex combination of product elements $v \otimes ...
{ "timestamp": "2005-03-24T16:46:37", "yymm": "0503", "arxiv_id": "quant-ph/0503194", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503194" }
\section{Introdu\c{c}\~ao} \hspace{.5cm} Nos dias atuais a Teoria Qu\^antica de Campos \'e largamente empregada em diversas \'areas da f\'{\i}sica, tais como, altas energias, mec\^anica estat\'{\i}stica, mat\'eria condensada, etc. Sendo a Teoria Qu\^antica de Campos fundamentalmente de aspectos perturbativos, ela sofr...
{ "timestamp": "2005-03-13T17:39:26", "yymm": "0503", "arxiv_id": "physics/0503107", "language": "pt", "url": "https://arxiv.org/abs/physics/0503107" }
\section{Introduction} An important part of the theory of vector bundles over homogeneous spaces $G/P$ is the study of {\em homogeneous} vector bundles. This class of vector bundles has first been investigated by Kostant and Bott in the 50's, who clarified the relation between the representation theory of $G$ and homo...
{ "timestamp": "2005-03-23T19:06:05", "yymm": "0503", "arxiv_id": "math/0503501", "language": "en", "url": "https://arxiv.org/abs/math/0503501" }
\section{Introduction} \label{sec:intro} Spectral properties of the Laplacian on a compact manifold is a well-established and still active field of research. Much less is known on the spectrum of \emph{non-compact} manifolds. We restrict ourselves here to the class of non-compact \emph{covering} manifolds $X \to M$ wi...
{ "timestamp": "2007-12-10T16:59:19", "yymm": "0503", "arxiv_id": "math-ph/0503005", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503005" }
\section{Introduction} We study the discrete random Schr\"odinger operator \begin{eqnarray} H_\omega=\Delta+\lambda V_\omega \end{eqnarray} on $\ell^2({\Bbb Z}^2)$, where $\Delta$ is the (centered) nearest neighbor Laplacian, with spectrum $[-4,4]$, and $\lambda$ is a small parameter (the disorder strength). ...
{ "timestamp": "2005-10-26T19:55:58", "yymm": "0503", "arxiv_id": "math-ph/0503064", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503064" }
\section*{Introduction} An operator $A:\mathbb R^d\rightarrow\mathbb R^d$ is called additively homogeneous if it satisfies $A(x+a\textbf{1})=A(x)+a\textbf{1}$ for all $x\in\mathbb R^d$ and $a\in\mathbb R$, where $\textbf{1}$ is the vector $(1,\cdots,1)'$ in $\mathbb R^d$. It is called isotone if $x\le y$ implies $A(x)\...
{ "timestamp": "2007-01-08T14:52:18", "yymm": "0503", "arxiv_id": "math/0503634", "language": "en", "url": "https://arxiv.org/abs/math/0503634" }
\section{Introduction} In \cite{Wer1}, we introduced a theory of {\it contractive Markov systems (CMS)} which provides a unifying framework in so-called 'fractal' geometry. It extends the known theory of {\it iterated function systems (IFS) with place dependent probabilities}, which are contractive on average, \cite...
{ "timestamp": "2005-08-18T12:13:14", "yymm": "0503", "arxiv_id": "math/0503633", "language": "en", "url": "https://arxiv.org/abs/math/0503633" }
\section{Introduction} Whether or not quantum information processing and quantum computing \cite{QCcomp} become practical technologies crucially depends on the ability to implement high-fidelity quantum logic gates in a scalable way \cite{diVinc}. Among alternative routes to this challenging goal, are of particula...
{ "timestamp": "2005-03-07T16:59:02", "yymm": "0503", "arxiv_id": "quant-ph/0503071", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503071" }
\section{Introduction} \label{sec:intro} We consider a family of generalized nonlinear Schr\"odinger and Hartree equations with a focusing nonlinearity. These equations have solitary wave solutions, and, in this paper, we study the effective dynamics of such solitary waves. The equations have the form: \begin{equatio...
{ "timestamp": "2005-03-07T01:01:06", "yymm": "0503", "arxiv_id": "math-ph/0503009", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503009" }
\section{Introduction} In our previous papers [1-6] published recently, a time-independent novel perturbation theory has been developed in the bound state domain, which is non-perturbative, self-consistent and systematically improvable, and used to treat successfully significant problems in different fields of physic...
{ "timestamp": "2005-03-21T13:21:05", "yymm": "0503", "arxiv_id": "nucl-th/0503055", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503055" }
\section{Introduction} \label{Sec:Introduction} Homotopy continuation methods provide reliable and efficient numerical algorithms to compute accurate approximations to all isolated solutions of polynomial systems, see e.g.~\cite{Li03} for a recent survey. As proposed in~\cite{SW}, we can approximate a positive dimensi...
{ "timestamp": "2005-03-29T18:46:35", "yymm": "0503", "arxiv_id": "math/0503688", "language": "en", "url": "https://arxiv.org/abs/math/0503688" }
\section{Introduction} Quantum computation and quantum information are subjects of much continuing interest and study. An initial impetus for this work was the realization that as computers became smaller, quantum effects would become more important. Additional interes...
{ "timestamp": "2005-06-20T21:21:04", "yymm": "0503", "arxiv_id": "quant-ph/0503154", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503154" }
\section{Introduction} \indent \indent In complex dynamics there exists an extensive study of polynomials as dynamical systems acting on ${\mathbb C}$. The orbit of a point $z_0\in{\mathbb C}$ under a polynomial $f \in {\mathbb C}[z]$ is the sequence $z_0,z_1,z_2,\ldots$ defined by $$z_n =f^n(z_0).$$ \hspace{0pt} Sub...
{ "timestamp": "2005-03-30T23:37:03", "yymm": "0503", "arxiv_id": "math/0503720", "language": "en", "url": "https://arxiv.org/abs/math/0503720" }
\section{Introduction} \label{Sect:1} It has long been recognised that the ultimate accuracy of optical measurements is set by the quantum nature of light. Indeed the desire to approach these quantum limits was a strong motivation for the study of nonclassical and particularly squeezed states of light \cite{LoudonKn...
{ "timestamp": "2005-03-30T02:50:23", "yymm": "0503", "arxiv_id": "quant-ph/0503224", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503224" }
\section{Introduction} Low-energy ${\bar K}N$ and ${\bar K}A$ interactions have gained substantial interest during the last two decades. It is known from the time-honored Martin analysis~\cite{Martin} that the isoscalar $s$-wave $K^-N$ scattering length is large and repulsive, Re$a_0{=}{-}1.7$~fm, while the isovecto...
{ "timestamp": "2005-03-30T08:42:06", "yymm": "0503", "arxiv_id": "nucl-th/0503076", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503076" }
\section{Quantum catastrophe models} We begin by constructing the quantum catastrophe models and first consider those derived from catastrophes occurring in a single variable, such as the cusp. We take as our model a system of two interacting bosonic modes. Let ($x_1$, $p_{x_1}$) and ($x_2$, $p_{x_2}$) be the (abst...
{ "timestamp": "2005-03-17T18:39:50", "yymm": "0503", "arxiv_id": "quant-ph/0503160", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503160" }
\section{Introduction} \label{1} A comprehensive understanding of Hamiltonian dynamics is a long outstanding problem in nonlinear and statistical physics, which has important applications in various other areas of physics. Typical Hamiltonian systems are nonhyperbolic as they exhibit mixed phase space with coexisting...
{ "timestamp": "2005-03-29T02:56:47", "yymm": "0503", "arxiv_id": "nlin/0503060", "language": "en", "url": "https://arxiv.org/abs/nlin/0503060" }
\section{} \section{Introduction} As a century old theory, quantum mechanics has provided the most effective description of the physical world. Recently, new discoveries were found for its applications to information and computation science \cite{Nielsen}, \textit{e.g.}, the efficient prime factorization of larger num...
{ "timestamp": "2006-07-03T20:48:46", "yymm": "0503", "arxiv_id": "quant-ph/0503168", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503168" }
\section{Introduction\label{introsec}} A collection of journal papers is a database of papers that comprehensively samples the journal literature of a scientific specialty. As such, the social and epistemological processes of the specialty are manifested in the complex network of linkages among entities within the coll...
{ "timestamp": "2005-03-08T18:48:08", "yymm": "0503", "arxiv_id": "physics/0503061", "language": "en", "url": "https://arxiv.org/abs/physics/0503061" }
\section*{Introduction.} Let $(M^n,g)$ be a Riemannian manifold and $(TM^n,g_s)$ its tangent bundle equipped with the Sasaki metric \cite{Sk}. Let $\xi$ be a given smooth vector field on $M^n$. Then $\xi$ naturally defines a mapping $\xi:M^n\to TM^n$ such that the submanifold $\xi(M^n)\subset TM^n$ is transverse to th...
{ "timestamp": "2005-03-24T21:52:54", "yymm": "0503", "arxiv_id": "math/0503561", "language": "en", "url": "https://arxiv.org/abs/math/0503561" }
\section{INTRODUCTION} Due to the fundamental importance of the waves and instabilities in plasma and hydrodynamics investigations, computational researchers have devoted great efforts in developing appropriate tools. One of the main challenges after developing numerically stable algorithms in fluid models has been ge...
{ "timestamp": "2005-03-05T14:09:47", "yymm": "0503", "arxiv_id": "physics/0503043", "language": "en", "url": "https://arxiv.org/abs/physics/0503043" }
\section{Introduction} The characterization and elimination of decoherence and other noise sources has emerged as one of the major challenges confronting the coherent experimental control of increasingly large multi-body quantum systems. Decoherence arising from undesired interactions with background (or environment) ...
{ "timestamp": "2005-12-16T02:56:07", "yymm": "0503", "arxiv_id": "quant-ph/0503243", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503243" }
\section{Introduction} \setcounter{equation}{0} Let $\lambda_1 ,\lambda_2 ,\lambda_2, \lambda_4 >0$ be given. We consider the following system for $(u, \eta )$ in $\Bbb R^2$. \begin{eqnarray} \label{11} \Delta u&=&-\lambda_1 e^{\eta} -\lambda_2 e^{u}+4\pi \sum_{j=1} ^{N} \delta (z-z_{j} ),\\ \label{12} \Delta ...
{ "timestamp": "2005-03-23T15:47:36", "yymm": "0503", "arxiv_id": "math/0503493", "language": "en", "url": "https://arxiv.org/abs/math/0503493" }
\section*{Introduction} Let $(M,g)$ be an $n+1$ -- dimensional Riemannian manifold with metric $g$. A vector field $\xi$ on it is called {\it holonomic} if $\xi$ is a field of normals of some family of regular hypersurfaces in $M$ and {\it non-holonomic} otherwise. The foundation of the classical ...
{ "timestamp": "2005-03-24T22:24:41", "yymm": "0503", "arxiv_id": "math/0503567", "language": "en", "url": "https://arxiv.org/abs/math/0503567" }
\section{Introduction} Very much physics is sometimes contained in simple and basic results of optics and electromagnetics. In this paper I shall focus on the character of electromagnetic waves reflected from a planar surface. As is well known, many everyday light phenomena that we can observe with plain eyes \cite{Mi...
{ "timestamp": "2005-03-29T12:50:47", "yymm": "0503", "arxiv_id": "physics/0503216", "language": "en", "url": "https://arxiv.org/abs/physics/0503216" }
\section{Introduction} Given a graph $G$ with $m$ edges, the Max-Cut problem is to determine (the size of) the maximum cut in $G$. For complete graphs, the largest cut has size $m/2+o(m)$. On the other hand, it is well known that a cut of size at least $m/2$ in a graph $G$ can be found using the natural greedy algori...
{ "timestamp": "2005-03-21T15:25:40", "yymm": "0503", "arxiv_id": "math/0503403", "language": "en", "url": "https://arxiv.org/abs/math/0503403" }
\section{Introduction} One of the key features of a physical system for quantum information processing (QIP) is quantum entanglement. The problem of entanglement of multipartite systems is far from being completely understood, and it has numerous interesting aspects. One of the possible approaches to multipartite ent...
{ "timestamp": "2005-03-15T10:31:08", "yymm": "0503", "arxiv_id": "quant-ph/0503133", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503133" }
\section{Introduction} In this paper we prove a slight variant of the hypergraph removal lemma established recently and independently by Gowers \cite{gowers} and Nagle, R\"odl, Schacht and Skokan \cite{nrs}, \cite{rodl}, \cite{rodl2}. To motivate this lemma, let us first recall the more well-known triangle removal le...
{ "timestamp": "2005-11-16T18:07:49", "yymm": "0503", "arxiv_id": "math/0503572", "language": "en", "url": "https://arxiv.org/abs/math/0503572" }
\section{\label{sec:level1}First-level heading:\protect\\ The line Implementing atom-optical devices often requires a strong confinement for all except one degree of freedom~\cite[and Refs therein]{intro}. Examples of physical situations where a strong confinement is needed are guided matter-wave interferometers~\ci...
{ "timestamp": "2005-06-24T15:05:21", "yymm": "0503", "arxiv_id": "quant-ph/0503196", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503196" }
\section{Introduction} \label{sec:intro} The multivector fields on a smooth manifold $M$ can be seen as multidifferential operators on the algebra $\mathcal{C}^\infty(M)$ of smooth functions on $M$. This assignment is a particular case of the following general construction: given a graded associative and commutativ...
{ "timestamp": "2006-01-12T13:17:51", "yymm": "0503", "arxiv_id": "math/0503380", "language": "en", "url": "https://arxiv.org/abs/math/0503380" }
\section{Introduction} The parallelogram law states that $\|x+y\|^2+\|x-y\|^2=2(\|x\|^2 + \|y\|^2)$ holds for all vectors $x$ and $y$ in a Hilbert space. This law implies that the so-called parallelogram inequality $\|x+y\|^2\leq 2(\|x\|^2 + \|y\|^2)$ trivially holds. S. Saitoh \cite{SAI} noted the inequality $\|x+y\|...
{ "timestamp": "2005-12-23T11:29:41", "yymm": "0503", "arxiv_id": "math/0503616", "language": "en", "url": "https://arxiv.org/abs/math/0503616" }
\section{Introduction} This paper summarizes some results of work originally initiated by Peter Carr. It supposes to investigate various numerical and analytical methods of option pricing using VG model in order to find out which algorithm is most efficient. Let us first give a brief overview of the VG model. The Vari...
{ "timestamp": "2010-01-15T20:29:12", "yymm": "0503", "arxiv_id": "physics/0503137", "language": "en", "url": "https://arxiv.org/abs/physics/0503137" }
\section{Introduction} A classical problem in geometry is to determine whether a Riemannian manifold ${\mathcal V}$ can be isometrically immersed in another Riemaniann manifold $\bar{\mathcal V}$. We will restrict ourselves to the case of codimension $1$ immersions, i.e., ${\mathcal V}$ has dimension $n$ and $\bar{\ma...
{ "timestamp": "2005-03-23T18:45:51", "yymm": "0503", "arxiv_id": "math/0503500", "language": "en", "url": "https://arxiv.org/abs/math/0503500" }
\section{The Hidden Subgroup Problem} One of the principal quantum algorithmic paradigms is the use of the abelian Fourier transform to discover a function's hidden periodicities. In the examples relevant to quantum computing, an oracle function $f$ defined on an abelian group $G$ has ``hidden periodicity'' if the...
{ "timestamp": "2005-03-09T20:06:26", "yymm": "0503", "arxiv_id": "quant-ph/0503095", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503095" }
\section{Introduction and summary \label{sec:intro}} One of the most intriguing {experimental} puzzles encountered in contemporary physics is the evident absence of SUSY partners of elementary particles in nature. In the context of {field theory} this means that SUSY, if it exists, must be spontaneously broken. Witte...
{ "timestamp": "2005-03-03T13:59:17", "yymm": "0503", "arxiv_id": "quant-ph/0503035", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503035" }
\section{Introduction} The quantum walk (QW) is an interesting quantum process that is attracting much attention from the algorithmic point of view \cite{Ambainis04}, but also because of its intrinsic interest \cite{Kempe03} through its connection with quantum cellular automata \cite{Meyer96}, and with the physics of ...
{ "timestamp": "2005-03-07T16:18:33", "yymm": "0503", "arxiv_id": "quant-ph/0503069", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503069" }
\section{Introduction} Optical, non imaging detectors are widely used for the detection of weakly interacting particles. At present the main focus of observation is on neutrinos and antineutrinos from various sources, but there are also plans to construct large optical detectors to search for as yet undiscovered part...
{ "timestamp": "2005-03-23T21:46:18", "yymm": "0503", "arxiv_id": "physics/0503185", "language": "en", "url": "https://arxiv.org/abs/physics/0503185" }
\section{Introduction} Let us recall the notion of a \emph{Poincar\'e embedding}: \begin{defin}[\rm({Levitt \cite{Levitt}, and \cite[Section 5]{Klein} for a modern exposition})] \label{def-Pemb} Let $W$ be a Poincar\'e duality space of dimension $n$ and let $P$ be a finite CW-complex of dimension $m$. A \emph{Poincar\...
{ "timestamp": "2005-03-25T16:47:01", "yymm": "0503", "arxiv_id": "math/0503605", "language": "en", "url": "https://arxiv.org/abs/math/0503605" }
\section*{Introduction} Let $M$ be a complex manifold, and $T^*M$ its cotangent bundle endowed with the canonical symplectic structure. Let $\mathcal{W}_M$ be the sheaf of rings of WKB operators, that is, microdifferential operators with an extra central parameter $\tau$. This ring provides a of $T^*M$. Recall th...
{ "timestamp": "2005-12-21T18:37:22", "yymm": "0503", "arxiv_id": "math/0503400", "language": "en", "url": "https://arxiv.org/abs/math/0503400" }
\section{Definitions and Notations} We briefly recall some well known notions of $CR$ geometry that will be used in the paper. Let $N\subset{\mathbb C}} \def\l{\lambda^n$ be a smooth connected real submanifold, and let $p\in N$. We denote by $T_p(N)$ the tangent space of $N$ at the point $p$, and by $H_p(N)$ the...
{ "timestamp": "2006-07-28T17:00:11", "yymm": "0503", "arxiv_id": "math/0503430", "language": "en", "url": "https://arxiv.org/abs/math/0503430" }
\section{Collecting the relevant $K$- and $L$-theory.} \setcounter{altel}{0} \pagenumbering{arabic} The material in this first section related to quadratic forms and L-groups has primarily been extracted from \cite{Giffen;k2} and \cite{Wall;lfound}, while the facts concerning the algebraic $K$-groups $K_0$, $K_1$ an...
{ "timestamp": "2005-03-24T14:18:00", "yymm": "0503", "arxiv_id": "math/0503538", "language": "en", "url": "https://arxiv.org/abs/math/0503538" }
\section{Introduction.}\nin Let $X$ be a (connected and reduced) complex space. We recall that $X$ is said to be {\it strongly} $q$-{\it pseudoconvex} in the sense of Andreotti-Grauert~\cite{AG} if there exists a compact subset $K$ and a smooth function $\varphi:X\to{\mathbb {R}}} \def\a {\alpha} \def\b {\beta}\def\g...
{ "timestamp": "2005-03-23T14:12:59", "yymm": "0503", "arxiv_id": "math/0503490", "language": "en", "url": "https://arxiv.org/abs/math/0503490" }
\section*{Introduction} Throughout the paper $k$ is a fixed algebraically closed field. All considered categories are additive $k$-categories and all functors are $k$-functors. One of the aims of the representation theory of finite-dimensional algebras is a description of indecomposable modules and homomorphism space...
{ "timestamp": "2005-08-02T10:23:19", "yymm": "0503", "arxiv_id": "math/0503513", "language": "en", "url": "https://arxiv.org/abs/math/0503513" }
\section{Introduction} \label{sec:intro} The known meson spectrum contains three pseudoscalars [$I^G (J^{PC}) = 1^- (0^{-+}) $], all with masses below $2\,$GeV \cite{pdg}: $\pi(140)$; $\pi(1300)$; and $\pi(1800)$. The lightest of these, the pion [$\pi(140)$], is much studied and well understood as QCD's Goldstone mode...
{ "timestamp": "2005-03-16T01:27:42", "yymm": "0503", "arxiv_id": "nucl-th/0503043", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503043" }
\section{Main Theorem} \label{intro} Vector bundles over the projective space ${\mathbf{P}}}% \P == \mathbb{P^n_{\mathbb{K}}}% \P == \mathbb{P$ are one of the main subjects in both (algebraic) geometry and commutative algebra. The most fundamental result in this area is the theorem due to Grothendieck which asserts ...
{ "timestamp": "2005-03-30T16:08:12", "yymm": "0503", "arxiv_id": "math/0503710", "language": "en", "url": "https://arxiv.org/abs/math/0503710" }
\section{Introduction} The geometric approach to the theory of linear dynamical systems has provided deep insights and elegant solutions to many control problems, such as the disturbance decoupling problem, the block decoupling problem, and the model matching problem (see~\cite{wonham} and the references therein)...
{ "timestamp": "2007-04-06T21:04:51", "yymm": "0503", "arxiv_id": "math/0503448", "language": "en", "url": "https://arxiv.org/abs/math/0503448" }
\section{Introduction} In a typical Bell experiment, two or more entangled particles are distributed to separate observers. Each observer measures on his particle one from a set of possible observables and obtains some outcome. One of the most striking features of quantum mechanics is that the resulting joint outcome ...
{ "timestamp": "2005-06-18T04:21:07", "yymm": "0503", "arxiv_id": "quant-ph/0503179", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503179" }
\section{Introduction} \indent\indent We study the long time behaviour of solutions to a class Korteweg-de Vries-type equations, with an additional term $b(t,x)u$. These equations, from now on called the bKdV, are of the form \begin{align} \partial_t u=-\partial_x\left(\partial_x^2 u+f(u)-b(t,x)u\right), \label{Eqn:K...
{ "timestamp": "2005-03-08T18:12:31", "yymm": "0503", "arxiv_id": "math-ph/0503016", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503016" }
\section{Introduction} Human altruistic behavior is a long-standing problem in evolutionary theory, as first realized by Darwin himself: \begin{quotation} He who was ready to sacrifice his life (\dots) rather than betray his comrades, would often leave no offspring to inherit his noble nature\dots Therefore, it seems...
{ "timestamp": "2005-03-16T20:03:02", "yymm": "0503", "arxiv_id": "q-bio/0503024", "language": "en", "url": "https://arxiv.org/abs/q-bio/0503024" }
\section{#1}} \newcommand{\newsubsection}[1]{\setcounter{equation}{0} \setcounter{dfn}{0} \subsection{#1}} \renewcommand{\theequation}{\thesection.\arabic{equation}} \newtheorem{dfn}{Definition}[section] \newtheorem{thm}[dfn]{Theorem} \newtheorem{lmma}[dfn]{Lemma} \newtheorem{ppsn}[dfn]{Proposition} \newtheorem{crlre...
{ "timestamp": "2005-04-21T17:52:13", "yymm": "0503", "arxiv_id": "math/0503689", "language": "en", "url": "https://arxiv.org/abs/math/0503689" }
\section{Introduction} The Heider balance \cite{h46,hei2,hara,dor1,wt} is a final state of personal relations between members of a society, reached when these relations evolve according to some dynamical rules. The relations are assumed to be symmetric, and they can be friendly or hostile. The underlying psycho-so...
{ "timestamp": "2005-03-11T17:49:04", "yymm": "0503", "arxiv_id": "physics/0503085", "language": "en", "url": "https://arxiv.org/abs/physics/0503085" }
\section{Introduction \label{In}} \bigskip Although there is a long history of theoretical work on the solution of the Coulomb problem in three-particle scattering \cite{alt:78a,berthold:90a,kievsky:96a,kievsky:01a,chen:01a,alt:02a, suslov:04a}, the work of Refs.~\cite{kievsky:96a,kievsky:01a} pioneered the effort ...
{ "timestamp": "2005-03-04T18:22:53", "yymm": "0503", "arxiv_id": "nucl-th/0503015", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503015" }
\section{Introduction} \label{sec:introduction} Half wave plate (HWP) retarders are used extensively for polarimetric measurements. The technique is used across a broad range of electro-magnetic frequencies because it provides an effective way to discriminate against systematic errors. The modulation efficiency of a ...
{ "timestamp": "2005-03-15T09:30:31", "yymm": "0503", "arxiv_id": "physics/0503122", "language": "en", "url": "https://arxiv.org/abs/physics/0503122" }
\section{Introduction} The Casimir effect concerns the Lamb shifts in the frequency of radiation modes due to the interaction between photon modes and electrical currents. The photon mode Lagrangian is discussed in Sec.\ref{LCMD}. Mode frequency shifts induce changes in the free energy which in the zero temperature li...
{ "timestamp": "2005-03-01T19:02:52", "yymm": "0503", "arxiv_id": "quant-ph/0503016", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503016" }
\section{Introduction} In this note, we study graphs without cycles of prescribed even lengths. For a finite or infinite set ${\cal C}$ of cycles, define $\mbox{ex}(n,{\cal C})$ to be the maximum possible number of edges in an $n$-vertex graph which does not contain any of the cycles in ${\cal C}$. The asymptotic behav...
{ "timestamp": "2005-03-28T02:39:06", "yymm": "0503", "arxiv_id": "math/0503623", "language": "en", "url": "https://arxiv.org/abs/math/0503623" }
\section{Introduction} Many aspects of life as a responsible citizen in society involve having an understanding of the probability of one type of event in comparison to others. Yet event probabilities are often expressed using unfamiliar or varied terminology (\textit{i.e.,} negative exponents, such as $10^{-4}$ or $...
{ "timestamp": "2005-04-01T01:56:05", "yymm": "0503", "arxiv_id": "physics/0503229", "language": "en", "url": "https://arxiv.org/abs/physics/0503229" }
\section{Motivation} Short-term financial data usually exhibit similar properties called `stylized facts' like, e.g., leptokurtosis, dependence of simultaneous extremes, radial asymmetry, vola\-tility clustering, etc., especially if the log-price changes (called the `log-returns') of stocks, stock indices, and foreign...
{ "timestamp": "2005-03-01T11:59:44", "yymm": "0503", "arxiv_id": "physics/0503007", "language": "en", "url": "https://arxiv.org/abs/physics/0503007" }
\section{Introduction} Quantum states which differ only by a overall phase cannot be distinguished by measurements in quantum mechanics. Hence phases were thought to be unimportant until Berry made an important and interesting observation regarding the behavior of pure quantum systems in a slowly changing environmen...
{ "timestamp": "2005-03-03T07:41:01", "yymm": "0503", "arxiv_id": "quant-ph/0503032", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503032" }
\section{Introduction, Notations} \medskip As is well known, the CSM converts the description of resonances by non-integrable Gamow states into one by square integrable states while leaving the discrete spectrum unchanged \cite{ABC}. Cuts describing the continuum are rotated, however, but this may be advantageous, ...
{ "timestamp": "2005-03-17T18:30:57", "yymm": "0503", "arxiv_id": "nucl-th/0503049", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503049" }
\section{Introduction}\label{s:intro} Analysis of complex high dimensional data is an exploding area of research, with applications in diverse fields, such as machine learning, statistical data analysis, bio-informatics, meteorology, chemistry and physics. In the first three application fields, the underlying assumpti...
{ "timestamp": "2005-03-22T07:46:24", "yymm": "0503", "arxiv_id": "math/0503445", "language": "en", "url": "https://arxiv.org/abs/math/0503445" }
\section{Introduction} The use and development of ion trapping techniques, which started about 50 years ago \cite{cite1}, have led to a broad range of discoveries and new experiments in physics and chemistry. In particular, one can cite high precision spectroscopy, mass measurements, particle dynamics, nuclear and ato...
{ "timestamp": "2005-03-14T21:35:30", "yymm": "0503", "arxiv_id": "physics/0503117", "language": "en", "url": "https://arxiv.org/abs/physics/0503117" }
\section{Introduction} \subsection{Harmonic analysis of boolean functions} \label{sec:intro} The motivation for this paper is the study of \emph{boolean functions} $f : \{-1,1\}^n \to \{-1,1\}$, where $\{-1,1\}^n$ is equipped with the uniform probability measure. This topic is of significant interest in theoretical c...
{ "timestamp": "2005-05-24T01:54:02", "yymm": "0503", "arxiv_id": "math/0503503", "language": "en", "url": "https://arxiv.org/abs/math/0503503" }
\section{\label{Intro}Introduction} Entanglement is a property of correlated quantum systems that cannot be accounted for classically. Entangled states of distinct (possibly interacting) quantum systems, which are those that cannot be factorized into product states of the subsystems, are of fundamental interest in qua...
{ "timestamp": "2006-09-04T17:15:28", "yymm": "0503", "arxiv_id": "quant-ph/0503116", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503116" }
\section{Introduction} \indent Ebola hemorrhagic fever is a highly infectious and lethal disease named after a river in the Democratic Republic of the Congo (formerly Zaire) where it was first identified in 1976 \cite{CDC1}. Twelve outbreaks of Ebola have been reported in Congo, Sudan, Gabon, and Uganda as of Septemb...
{ "timestamp": "2005-03-02T00:52:48", "yymm": "0503", "arxiv_id": "q-bio/0503006", "language": "en", "url": "https://arxiv.org/abs/q-bio/0503006" }
\section{introduction} One of the major problems in mathematical physics is concerned with the geometrical information stored in the spectrum of the Laplace Beltrami operator \begin{equation} -\triangle\psi_j({\bf r}) = E_j\psi_j({\bf r}); \;\; {\bf r} \in \Omega(\alpha) \ . \end{equation} \noindent The spectrum is or...
{ "timestamp": "2005-03-03T12:54:32", "yymm": "0503", "arxiv_id": "nlin/0503002", "language": "en", "url": "https://arxiv.org/abs/nlin/0503002" }
\section{Introduction} Let $\left( \Omega ,\mathcal{F},\left( \mathcal{F}_{t}\right) _{t\geq 0},% \mathbf{P}\right) $ be a filtered probability space satisfying the usual hypotheses (right continuous and complete). Given the end $L$\ of an $\left( \mathcal{F}_{t}\right) $\ predictable set $\Gamma $, i.e\textbf{\ }% \b...
{ "timestamp": "2007-08-02T23:45:56", "yymm": "0503", "arxiv_id": "math/0503386", "language": "en", "url": "https://arxiv.org/abs/math/0503386" }
\section{\label{intro}Introduction} Let $X$ be a finite set. A (symmetric) {\it association scheme} with $d$ classes on $X$ is a partition of $X\times X$ into sets $R_0$, $R_1, \ldots , R_d$ (called {\it associate classes} or {\it relations}) such that \begin{enumerate} \item $R_0=\{(x,x) \mid x\in X\}$ (the diagonal...
{ "timestamp": "2005-03-24T23:34:25", "yymm": "0503", "arxiv_id": "math/0503570", "language": "en", "url": "https://arxiv.org/abs/math/0503570" }
\section{Introduction} \label{intro} Donald Coxeter's work on regular polytopes and groups of reflexions is often viewed as his most important contribution. At its heart lies a dialogue between geometry and algebra which was so characteristic for his mathematics (see, for example, \cite{c_rp,c_rcp,cm}). This paper ...
{ "timestamp": "2005-03-18T20:24:09", "yymm": "0503", "arxiv_id": "math/0503389", "language": "en", "url": "https://arxiv.org/abs/math/0503389" }
\section{Introduction} \lbl{sec.intro} \subsection{The volume conjecture for small angles} \lbl{sub.volume} In an earlier publication, the authors stated and proved the {\em Volume Conjecture} for small purely imaginary angles; see \cite{GL2}. More precisely, the authors proved that for every knot $K$ in $S^3$ the...
{ "timestamp": "2005-04-04T16:14:11", "yymm": "0503", "arxiv_id": "math/0503641", "language": "en", "url": "https://arxiv.org/abs/math/0503641" }
\section{Introduction} Alternative models for quantum computation based on projective measurements \cite{Raussen01, Nielsen01, Leung03} have recently attracted much attention. A common concept of these models is the simulation of individual quantum circuit operations and how simulations can be composed together \cite{...
{ "timestamp": "2006-03-27T21:52:23", "yymm": "0503", "arxiv_id": "quant-ph/0503130", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503130" }
\section{Introduction} Consider a region ${\mathcal D}$ in ${\mathbb R}^2$ with piecewise smooth boundary and finite area. The {\em billiard flow} on the unit cotangent bundle of ${\mathcal D}$ is defined as the motion along straight lines with specular reflections at its boundary $\partial{\mathcal D}$. The quantum s...
{ "timestamp": "2005-03-28T16:58:14", "yymm": "0503", "arxiv_id": "math-ph/0503066", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503066" }
\section{Introduction} Systems made up of entities that interact pairwise can be modeled as networks. To comprehend the emergent properties of such systems---the objective of the study of complex systems and systems biology---one approach is to investigate the global properties of the corresponding networks \cite{mejn...
{ "timestamp": "2005-03-06T19:52:49", "yymm": "0503", "arxiv_id": "q-bio/0503010", "language": "en", "url": "https://arxiv.org/abs/q-bio/0503010" }
\section{Introduction} The general structures ruling the evolution of classical and quantum systems are not essentially different. For instance both systems are Hamiltonian vector fields and both are derivations on the Lie algebra of observables with respect to the Poisson bracket and the commutator bracket respectivel...
{ "timestamp": "2005-03-15T17:04:05", "yymm": "0503", "arxiv_id": "math-ph/0503040", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503040" }
\section{Introduction} The Galton board is an upright board with evenly spaced nails driven into its upper half. The nails are arranged in staggered order. The lower half of the board is divided with vertical slats into a number of narrow rectangular slots. From the front, the whole installation is covered with a glas...
{ "timestamp": "2005-03-10T14:51:54", "yymm": "0503", "arxiv_id": "nlin/0503024", "language": "en", "url": "https://arxiv.org/abs/nlin/0503024" }
\section{Introduction} This work is motivated by the problem of multi-vehicle formation (or swarm) control, e.g., for meter-scale UAVs (unmanned aerial vehicles), and builds on our earlier work on planar formation control laws \cite{scltechrep,scl02,cdc03} by extending the key results to the three-dimensional setting....
{ "timestamp": "2005-03-18T22:37:41", "yymm": "0503", "arxiv_id": "math/0503390", "language": "en", "url": "https://arxiv.org/abs/math/0503390" }
\section{Introduction} In a preceding article \cite{FHPR02} {\it coherence in a relative sense}, i. e., understood as a relation between a given observable and a given quantum state, was postulated to be {\it identical with incompatibility} between observable and state as far as its {\it quantity} $I_C$ is concerned. ...
{ "timestamp": "2005-03-08T10:22:35", "yymm": "0503", "arxiv_id": "quant-ph/0503077", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503077" }
\section{Introduction} Generalizations $\Gamma_n$ of Hermite polynomials $H_n$ were recently \cite{GiMeWe} proposed to describe, for instance, density perturbations constrained by a condition of matter conservation. Because of the constraint, such polynomials cannot form a complete set, but span a subspace well sui...
{ "timestamp": "2005-03-25T15:10:30", "yymm": "0503", "arxiv_id": "math-ph/0503060", "language": "en", "url": "https://arxiv.org/abs/math-ph/0503060" }
\section{Introduction}\label{s:1} Nonlocality, {\em i.e.} the existence of correlations which cannot be explained by any local hidden variable model, is perhaps the most debated implication of quantum mechanics. During the last decade other aspects of nonlocality, in addition to generating nonlocal correlations, hav...
{ "timestamp": "2005-03-10T14:51:39", "yymm": "0503", "arxiv_id": "quant-ph/0503104", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503104" }
\section{Introduction} In Newton's conception, there was an absolute background space. While matter, forces, energy and the like were actors acting out in time. So also the law of gravitation was an action at a distance theory. Every material particle exerted the force of gravitation instantly on every other material p...
{ "timestamp": "2005-03-29T14:59:39", "yymm": "0503", "arxiv_id": "physics/0503220", "language": "en", "url": "https://arxiv.org/abs/physics/0503220" }
\section{Introduction} \subsection{Reminder on Moyal product.}\label{reminder} Let $V$ be a finite dimensional vector space equipped with a nondegenerate bivector $\pi\in\wedge^2V$. Associated with $\pi$ is a Poisson bracket $f,g\mapsto \{f,g\}:=\langle df\wedge dg,\pi\rangle$ on $\mathbf{k}[V],$ the polynomial algebra...
{ "timestamp": "2005-03-20T23:52:15", "yymm": "0503", "arxiv_id": "math/0503405", "language": "en", "url": "https://arxiv.org/abs/math/0503405" }
\section{Introduction} \setcounter{equation}{0} Let $M$ be a connected complex manifold and $\hbox{Aut}(M)$ the group of holomorphic automorphisms of $M$. If $M$ is Kobayashi-hyperbolic, $\hbox{Aut}(M)$ is a Lie group in the compact-open topology \cite{Ko}, \cite{Ka}. Let $d(M):=\hbox{dim}\,\hbox{Aut}(M)$. It is well-...
{ "timestamp": "2005-09-22T02:04:09", "yymm": "0503", "arxiv_id": "math/0503471", "language": "en", "url": "https://arxiv.org/abs/math/0503471" }
\section{\label{}Introduction} In the last years a widespread attention has been devoted to the role played by the isospin degree of freedom in the heavy--ion reaction physics. The interest on this subject is twofold: the knowledge of the symmetry term in the Equation of State (EOS) of asymmetric nuclear matter, w...
{ "timestamp": "2005-03-08T19:37:21", "yymm": "0503", "arxiv_id": "nucl-th/0503018", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503018" }
\section{Introduction} There is a well known similarity between the two-dimensional models of the planetary atmosphere and the magnetized plasma. In the absence of dissipation the models can be reduced to differential equations having the same structure: the Charney equation for the nonlinear Rossby waves , in the phy...
{ "timestamp": "2005-03-31T04:34:52", "yymm": "0503", "arxiv_id": "physics/0503155", "language": "en", "url": "https://arxiv.org/abs/physics/0503155" }
\section{Introduction} In [\ref{C}], the author studied the problem of finding ``almost squares" in short intervals, namely: \begin{question} \label{old} For $0 \leq \theta < 1/2$, what is the least $f(\theta)$ such that, for some $c_1, c_2 > 0$, any interval $[x - c_1 x^{f(\theta)}, x + c_1 x^{f(\theta)}]$ contains an...
{ "timestamp": "2005-03-24T18:42:42", "yymm": "0503", "arxiv_id": "math/0503438", "language": "en", "url": "https://arxiv.org/abs/math/0503438" }
\section{introduction} In relativistic heavy ion collisions a localized high energy density domain, a fireball, is created. The study of the properties of this hot and dense matter is the main objective of the experiments being conducted at RHIC and as of 2007 at LHC. Event-by-event particle fluctuations are the obser...
{ "timestamp": "2006-04-29T17:03:29", "yymm": "0503", "arxiv_id": "nucl-th/0503026", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503026" }
\section{INTRODUCTION} \label{sectoin1} The proton separation energies of nuclei lying in the domain beyond the proton drip line are negative. Consequently these proton rich nuclei have positive $Q$ values for proton emissions with a natural tendency to shed off excess protons and are spontaneous proton emitters...
{ "timestamp": "2005-11-17T07:06:55", "yymm": "0503", "arxiv_id": "nucl-th/0503007", "language": "en", "url": "https://arxiv.org/abs/nucl-th/0503007" }
\section{Introduction} \indent \hspace{7mm} Random variables having orders-of-magnitude large values, but with correspondingly orders-of-magnitude small probabilities for their occurrence, are known to give non-Gaussian statistics for their fluctuations - the L\'{e}vy statistics \cite{Paul}. For these {\it larger-than-...
{ "timestamp": "2005-03-08T12:47:39", "yymm": "0503", "arxiv_id": "physics/0503059", "language": "en", "url": "https://arxiv.org/abs/physics/0503059" }
\section{Introduction} A nearest particle system on $S= \{1,2,\cdots,N\}$ is a continuous time Markov chain with the state space $\{ A : A \subset S \}$. The jump rates are specified as follows: $$ \begin{array}{ll} q (A, A \setminus \{x\}) = 1 & {\rm if} \ x \in A; \\ q(A, A \cup \{x\}) = \beta(l_x(A), r_x(A)) & {\...
{ "timestamp": "2005-03-21T05:48:36", "yymm": "0503", "arxiv_id": "math/0503409", "language": "en", "url": "https://arxiv.org/abs/math/0503409" }
\section{Introduction} During the past 20 years a number of methods has been devised for state selective preparation and manipulation of discrete-level quantum systems \cite{paramonov1983,chelkowski1990,kaluza1993,bergmann1998,rabitz2003}. However, simple population oscillations, induced by a resonant driving pulse ha...
{ "timestamp": "2005-03-25T00:19:11", "yymm": "0503", "arxiv_id": "quant-ph/0503197", "language": "en", "url": "https://arxiv.org/abs/quant-ph/0503197" }
\section{Introduction} The century old Riemann hypothesis \cite{WaWh} states that the only nontrivial zeros of the zeta function, \begin{eqnarray} \zeta(s) = \sum_{n=1}^\infty {1\over n^s} = \prod (1-p^{-s})^{-1} \ , \end{eqnarray} are on the set of points $s={1\over 2}+it$. Tremendous numerical computations ...
{ "timestamp": "2005-03-16T21:21:47", "yymm": "0503", "arxiv_id": "physics/0503141", "language": "en", "url": "https://arxiv.org/abs/physics/0503141" }