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[ { "content": "in higher dimensions a true crystal , named wigner crystal , where the density is perfectly ordered , is possible when the repulsion between particles dominates over the kinetic energy in the case of small density . in one dimension , quantum fluctuations prevent any type of true spin - symmetry b...
[ { "content": "since the copula of two continuous random variables is scale - invariant , copulas are regarded as the functions that capture dependence structure between random variables . for many purposes , independence and monotone dependence \n have so far been considered two opposite extremes of dependence ...
[ { "content": "recently , as natural alternatives to general relativity , the scalar - tensor theories have been studied by many theoretical physicists . in these theories , \n the gravity is mediated not only by a tensor field but also by a scalar field . \n also , such theories have been of interest as effecti...
[ { "content": "molecular modeling and simulation is a technology central to many areas of research in academia and industry . with the advance of computing power , \n the scope of application scenarios for molecular simulation is widening , both in terms of complexity of a given simulation and in terms of high t...
[ { "content": "this note is a write - up of talks given at the workshop `` vertex operator algebras in mathematics and physics '' at the fields institute in toronto in october 2000 and at some other occasions before . \n its purpose is to explain how results in low dimensional quantum field theory obtained from ...
[ { "content": "we thank richard friend , ayelet vilan and dassia egorova , as well as the reviewers , for useful discussions , and johannes zimmermann and tobias glaser for the angle - dependent ir spectra . \n this work was supported by the netherlands organization for scientific research onderzoek ( nwo ) thro...
[ { "content": "it is generally believed , and confirmed by lattice qcd calculations @xcite , that hadronic matter under extreme conditions will form a plasma in which quarks and gluons are no longer confined to individual hadrons and are in both thermal and chemical equilibrium . to search for such a quark - glu...
[ { "content": "molecular electronics is an active field with many potential applications and novel innovations in nanoelectronic devices @xcite . \n an ultimate goal in molecular electronics is to construct molecule - based integrated circuits . to achieve this goal , understanding electron transport through a s...
[ { "content": "the qcd - inspired light - front constituent quark model @xcite , with two components in the interaction , a contact term and a coulomb - like potential , was used previously to investigate the properties of mesons @xcite with reasonable success . \n it was also applied to investigate the bindin...
[ { "content": "in recent years many experimental and theoretical efforts@xmath8 have been made to investigate on the nature of the bremsstrahlung emission in the @xmath0-decay of heavy nuclei , because the behavior of the energy spectrum of photons is strongly related to the dynamics of the @xmath0-decay and alp...
[ { "content": "magnetars are neutron stars with typically longer periods of spinning ( @xmath22@xmath312 s ) and stronger surface magnetic fields ( @xmath0@xmath4 g ) @xcite , compared to normal neutron stars . \n their manifestations include soft gamma - ray repeaters ( sgrs ) and anomalous x - ray pulsars ( ...
[ { "content": "inverse problems arise whenever one searches for unknown causes based on observation of their effects . driven by the requirements from huge amount of practical applications , \n the field of inverse problems has undergone a tremendous growth . \n such problems are usually ill - posed in the sense...
[ { "content": "in heavy - ion ( ) as well as in proton - proton ( ) collisions , the measurements related to strange hadrons constitute unique tools to study the physics of the strong interaction . in this respect , \n given their strangeness content , the charged multi - strange baryons \n ( @xmath3 ) , ( @xma...
[ { "content": "the galactic center ( gc ) is an exceptional region for testing massive star formation and evolution models . \n it contains 10% of the present star formation activity in the galaxy , yet fills only a tiny fraction of a percent of the volume in the galactic disk500 pc and thickness of @xmath060 ...
[ { "content": "quantum walks ( qws ) provide the natural - yet unitary - extension of the classical random walk ( rw ) to the quantum regime @xcite , where the superposition principle allows a wave function to explore different paths simultaneously . the resulting interference in the transition amplitudes is cau...
[ { "content": "is the electroweak phase transition accompanied by the condensation of some defects ? what is happening with the defects at the crossover region \n ? is there a range of parameters supporting a dilute gas of such defects in the broken phase and how are they related to the well - known sphaleron co...
[ { "content": "in this paper , we study behavior of principal curvatures of wave fronts in the euclidean @xmath1-space @xmath2 with non - degenerate singular points which contain cuspidal edges and swallowtails , and their applications . \n principal curvatures for regular surfaces play important roles to study ...
[ { "content": "the cosmic infrared background ( cib ) is the collective radiation emitted throughout cosmic history , including from sources inaccessible to current telescopic studies ( see review by kashlinsky , 2005 ) . \n the latter category includes the very first luminous objects , currently a subject of in...
[ { "content": "suppose @xmath1 is a density on a state - space @xmath2 with respect to some dominating measure @xmath3 . most often the state - space is a subset of the euclidean space and @xmath3 is the lebesgue measure . \n in this article we will always assume @xmath3 to be the lebesgue measure . \n statistic...
[ { "content": "the rare charmless b meson decays arouse more and more interest , since it is a good place for testing the standard model ( sm ) , studying cp violation and looking for possible new physics beyond the sm . \n since 1999 , the b factories in kek and slac collect more and more data sample of rare b ...
[ { "content": "the teichmller space @xmath3 of the unit disk @xmath4 , called the _ universal _ teichm \" uller space , consists of all quasisymmetric maps @xmath5 which fix @xmath6 , @xmath7 and @xmath8 on the unit circle @xmath9 ( cf . \n the teichm \" uller space of an arbitrary hyperbolic surface embeds in @...
[ { "content": "the study of absorption line systems in the spectra of quasars ( qsos ) has been useful in detecting distant normal field galaxies situated close to the lines of sight of qsos . \n conventionally , all such absorbers with velocity @xmath5 @xmath6 relative to the background qso are believed to be ...
[ { "content": "flow and transport are fundamental in many geo - engineering applications , including oil and gas recovery from hydrocarbon reservoirs , groundwater contamination and sustainable use of groundwater resources , storing greenhouse gases ( e.g. co@xmath1 ) or radioactive waste in the subsurface , or ...
[ { "content": "in the past few decades , there has been tremendous interests in the study of subluminal and superluminal light propagation @xcite . \n the group velocity of light pulse can be reduced in bose - einstein condensate of sodium atom gas @xcite , and in hot gases @xcite , and even halted in vapor of r...
[ { "content": "the problem of determining the appearance of a fixed _ pattern _ in long sequences of observation is relevant in many scientific problems . \n for example , in the area of computer network security , the detection of intrusions , which become increasingly frequent , is very important . \n intrusio...
[ { "content": "at least 10% of all neutron stars are born as magnetars , with magnetic fields @xmath5 g. their activity is powered by the decay of the ultrastrong field and lasts about @xmath6 years . \n they are observed at this active stage as either soft gamma repeaters ( sgrs ) or anomalous x - ray pulsars...
[ { "content": "it is well established that the universe is permeated with magnetic fields ( see , e.g. , * ? ? ? \n * ) , and yet the origin of them is not well understood ( see * ? ? ? \n * and references therein ) . \n the problem of cosmic magnetism can be divided into two parts - the origin of seed fields an...
[ { "content": "our data consists of 19 pointed observation of a2218 , taken with the 15 micron filter of the irc - l @xcite aboard _ akari _ @xcite . \n the data was reduced using the standard irc pipeline , version 20070912 . the pipeline s median sky subtraction was utilized but resulted in dark areas , signif...
[ { "content": "polars ( am her type systems ) are cataclysmic binaries in which a magnetic white dwarf accretes matter from a red dwarf star filling its roche lobe . \n the accretion occurs along the magnetic field lines down to the magnetic poles of the white dwarf . the x - rays and the optical polarized flux ...
[ { "content": "the issue of what happens to complexity in an evolving system is of great interest . in natural ( biological ) evolution \n , the naive view is that life started simple , and evolved ever more complex life forms over time , leading to that pinnacle of complexity , _ \n homo sapiens_. the end point...
[ { "content": "the haldane shastry ( hs ) spin chain describes @xmath1 spins equally spaced on a circle with an interaction inversely proportional to the square of their chord distance @xcite . \n the original motivation for studying this model is the fact that it possesses an exact jastrow - product ground st...
[ { "content": "the recent accelerated expansion of the universe and its cause is one of the most puzzling mysteries in cosmology and physics today . since the observations of type ia supernovae ( sneia ) reported by two groups @xcite \n , a lot of observations have been accumulating to indicate that the univers...
[ { "content": "the duluth systems in senseval-2 take a supervised learning approach to the spanish and english lexical sample tasks . \n they learn decision trees and naive bayesian classifiers from sense - tagged training examples where the context in which an ambiguous word occurs is represented by lexical fea...
[ { "content": "cluster - tilted algebras were introduced by buan , marsh and reiten @xcite and , independently in @xcite for type @xmath0 as a byproduct of the now extensive theory of cluster algebras of fomin and zelevinsky @xcite . since then , cluster - tilted algebras have been the subject of several investi...
[ { "content": "a common feature of spatially extended systems that are driven far - from - equilibrium is spatiotemporal chaos where the dynamics are aperiodic in space and time @xcite . \n important examples include the dynamics of the atmosphere and climate @xcite ; fluid convection @xcite ; the convection ...
[ { "content": "complex ( dusty ) plasma is a low - temperature plasma including microparticles . due to electron absorption , particles acquire a considerable electric charge . \n thus , a strongly coupled coulomb system is formed @xcite . \n such plasma represents a natural system which makes it possible to obs...
[ { "content": "accretion - powered millisecond pulsars ( amps ) provide a unique laboratory for studying the process of disk accretion onto magnetic stars ( @xcite and refrences therein ) . \n the @xmath0@xmath1 g stellar magnetic field truncates the accretion disk only a few neutron star radii above the surfac...
[ { "content": "the tsc property can be revealed by studying the nature of edge states . \n we first calculate the energy dispersion under several conditions . figure [ bands]a shows the evolution of the non - superconducting ( nsc , @xmath26 ) band structure with different values of @xmath14 in brillouin zone (...
[ { "content": "helical magnets are systems in which long - range magnetic order takes the form of a helix or spiral , such that in any given plane perpendicular to a preferred direction there is ferromagnetic order , but the direction of the magnetization rotates as one goes along the preferred axis . \n the pit...
[ { "content": "spatial confinement of condensed matter is known to induce a wealth of exotic crystalline structures.@xcite in essence this can be attributed to a phenomenon coined packing frustration ; an incompability between the preferred packing of particles whether atoms , molecules , or colloidal particles...
[ { "content": "multifractals appear in a wide range of situations like energy dissipation in turbulent flows @xcite , electronic eigenstates at metal insulator transition @xcite , fluctuations in finance @xcite , dynamics of human heartbeat @xcite and many others . \n recently , multifractal behavior of the firs...
[ { "content": "the cosmic infrared background ( cib or cirb ) contains a considerable fraction of the collective radiation emitted by stars through the cosmic time . \n stars in the epoch of reionization ( eor ) have the bulk of their radiation redshifted into the near - infrared band ( @xmath40.7 - 5 @xmath5 m ...
[ { "content": "fixons @xmath1 et @xmath2 deux entiers et @xmath3 . \n soient @xmath4 et @xmath5 deux systmes de variables . on se donne @xmath6 . \n notons @xmath7 lanneau des oprateurs diffrentiels coefficients dans @xmath8 . \n pour @xmath9={\\mathbb{c}}[s_1,\\ldots , s_p]$ ] , considrons lidentit suivante :...
[ { "content": "the synthetic field method ( sfm ) was developed by gonzlez et al . \n ( 1998 ) as a technique for determining the average opacity through the disk of a nearby spiral by counting more distant background galaxies . \n this number is compared with those of `` synthetic fields '' , a known wfpc2 deep...
[ { "content": "the primary mission of the batse instrument was to detect and locate @xmath0-ray bursts . \n while the 8 detectors had no intrinsic positional sensitivity , burst positions were obtained by triangulation between detectors . \n it was realised , prior to launch , that persistent sources of @xmath0-...
[ { "content": "in the conventional quark model , a baryon is a bound state of three more - or - less equivalent valence quarks . \n however , there are variants of the quark model in which interactions give rise to a quark - diquark structure for the baryon , where the binding of two of the quarks in the baryon ...
[ { "content": "compressed sensing @xcite has generated enormous interest and research activities in mathematics , statistics , signal processing , imaging and information sciences , among numerous other areas . \n one of the basic problems is to reconstruct a sparse signal under a few linear measurements ( linea...
[ { "content": "in the last decade interesting correspondences were discovered relating quiver gauge theories , lattice polygons and calabi - yau singularities . \n the motivation and evolution of these ideas in physics are well - documented in many articles ; e.g. @xcite . in the present paper \n we want to put ...
[ { "content": "one way to tackle the problem of fluid turbulence is to study its model with a drastically reduced degrees of freedom . \n these models are made in mostly phenomenological ways to qualitatively have a few , selected aspects of turbulence . \n celebrated models include the burgers equation @xcite a...
[ { "content": "quantum chromodynamics ( qcd ) owes its confining property to non - perturbative structures of its groundstate which are , after many years of research , not yet uniquely identified . \n ( for a recent overview of competing pictures see e.g. @xcite ) . in a more pragmatic attitude , the stochastic...
[ { "content": "40004000 = 1000 = ifundefinedreset@font@font footnotetext#1 tempcntc citex[#1]#2@fileswauxout tempcnta@tempcntb@neciteaciteforciteb:=#2citeo#1 citeotempcnta > tempcntbcitea citea , m tempcnta = tempcntbtempcnta # 1 o p # 1#1 # 1 # 1 # 1 # 1 # 1#2 # 1#2_#1f_#2 # 1#1 # 1#1 _ # ...
[ { "content": "the continuing search for new superconductors has recently resulted in the identification of a new family of superconducting phosphide compounds with the chemical composition _ _ a__pt@xmath0p ( _ a _ = sr , ca , or la).@xcite these materials , whose superconductivity has been claimed to be driven...
[ { "content": "for the general case of @xmath1 transition into a combination of @xmath27 ( @xmath28 ) and @xmath29 ( @xmath30 ) states one can write the sk , sno cc and sno nc rates as r^el_sk & = & f_b p_ee + f_b r p_ea , [ two ] + r^cc_sno & = & f_b p_ee , [ three ] + r^nc_sno & = & f_b ( p_ee + p_ea ) , [ fou...
[ { "content": "the flavor evolution of supernova ( sn ) neutrinos , is strongly impacted by the self - induced effects , associated with instabilities induced by the the neutrino - neutrino interactions in the deepest stellar regions @xcite ( see also @xcite for a recent review ) . in this context a key ingred...
[ { "content": "the nonlinear coupled set of three odes [ lorenz ] x = -x + y , y = r x - y -xz , z = -bz + xy , was first derived by berry saltzman and edward lorenz @xcite as a model for thermal convection between two plates perpendicular to the direction of the earth s gravitational force . \n it has three...
[ { "content": "decay of a heavy particle with a photon in the final state can often lead to experimental signals for physics beyond the standard model . \n recent literature contains many studies , both experimental and theoretical , devoted to signals of the type @xmath2 + @xmath3 , @xmath4 + @xmath3 etc . \n @...
[ { "content": "in the last few years , approximately 40 new galactic sources of very - high - energy ( vhe ) @xmath2-ray emission ( 100gev@xmath3100tev ) have been discovered using the high energy stereoscopic system ( hess ) cherenkov telescope array ( e.g. , * ? ? ? \n these are an exciting new population of s...
[ { "content": "in an attempt to unify electrodynamics and general relativity , kaluza introduced an extra , a fifth dimension @xcite and assumed all fields to be independent of the extra dimension . \n klein @xcite followed this idea , however , he assumed the fifth dimension to be compactified on a circle of pl...
[ { "content": "strong electron correlations in multi - band , orbitally degenerate systems represent an important current theoretical challenge . a lively experimental playground for that is provided by electron- and hole - doped fullerene systems , which exhibit a variety of behavior , including unconventional ...
[ { "content": "the current astrophysical observations of the type ia supernovae ( snia ) @xcite , the cosmic microwave background ( cmb ) @xcite and the large scale structure ( lss ) @xcite have revealed that the expansion of our universe is accelerated @xcite . \n this indicates that there exists some unkno...
[ { "content": "young supernova remnants ( snrs ) are believed to be the prime accelerators of cosmic rays , at least up to the `` knee '' of the cosmic ray spectrum at energies of @xmath2 tev , beyond which the spectrum steepens . however , the direct evidence for particle acceleration to such energies is scarc...
[ { "content": "ever since the seminal work of kramers on the diffusion model of chemical reactions was published about half a century ago @xcite , the theory of activated processes has become a central issue in many areas of science @xcite , notably in chemical physics , nonlinear optics and condensed matter phy...
[ { "content": "in the modern viewpoint on gauge symmetry enhancement in open string theory , the gauge vectors associated to a @xmath2 gauge algebra are seen to arise from open strings beginning and ending on a collection of @xmath3 dirichlet branes ( see @xcite ) . given the utility and simplicity of brane pict...
[ { "content": "the phenomenon of outflowing mass from the cores of active galactic nuclei ( agns ) has been well established by now . \n typical velocities of a few hundreds to a few thousands ^-1 \n kms@xmath0 have been measured in numerous objects ( crenshaw et al . 2003 and references therein ) . \n recent s...
[ { "content": "the emergence of class structure in society is a ubiquitous phenomenon in the biological and the social sciences @xcite . \n social hierarchies have been widely observed in animal populations including insects @xcite , mammals @xcite , and primates @xcite , as well as human communities @xcite . ...
[ { "content": "looking out at the universe from the vantage point of earth , we see a small fluctuation @xmath0 in the temperature of the cosmic microwave background radiation ( cmb ) . over the last decade , advances in observational astronomy have allowed us to commence a detailed study of @xmath0 s statistica...
[ { "content": "a good understanding of quantum chromodynamics ( qcd ) at finite temperature and baryon density is crucial for us to understand a wide range of physical phenomena . \n for instance , to understand the evolution of the universe in the first few seconds , one needs the knowledge of qcd phase transit...
[ { "content": "evolution of a degenerate c o stellar core with a mass close to the chandrasekhar limit ( @xmath14 for a carbon white dwarf , see bisnovatyi - kogan , 1989 ) leads to the development of thermal instability and to the explosion . \n the critical density @xmath15 for the beginning of the explosion ...
[ { "content": "in recent years a significant effort has been devoted to the understanding of glass - forming systems . \n recent theoretical and numerical results clearly show that the slowing down of the dynamics near the glass transition is strongly connected to the potential energy landscape geometry . \n the...
[ { "content": "[ sec : intro ] many interesting phenomena in the physical sciences and in applications are characterized by their high dimensionality and the presence of many different spatial and temporal scales . \n standard examples include atmosphere and ocean sciences @xcite , molecular dynamics @xcite an...
[ { "content": "network coding attracted the attention in wireless networks @xcite . \n the network coding benefit is easily represented by reducing the number of transmissions . for example , in two - way relay networks @xcite of figure [ f : twoway ] , the traditional method requires four slots to exchange data...
[ { "content": "high energy processes can be described within quantum chromodynamics ( qcd ) through its factorization properties . \n these allow us to write the cross sections by separating the hard part , which is the well defined interaction of a quark with _ \n e.g. _ a virtual photon , from the soft part , ...
[ { "content": "the concept of casimir forces,@xcite i.e. long - ranged effective interactions between macroscopic bodies immersed in strongly fluctuating media , is nowadays recognized in plethora of systems ranging from biology to cosmology . \n on one hand their prominent importance stems from providing possib...
[ { "content": "junctions consisting of a single organic molecule between two metallic leads hold great promise for future nanoscale devices , where their potential applications include switches , transistors , and sensors . \n experimentally , it has proved difficult to control their production in an atomistic m...
[ { "content": "the effective potential plays a crucial role in determining the nature of the vacuum in a weakly coupled field theory , as was emphasized in the classic paper of coleman and weinberg @xcite . \n calculation of this object by summing infinite series of feynman diagrams at zero momentum is an onerou...
[ { "content": "confinement and propagation of surface plasmons in a metal circuitry have received considerable interest for their capability to transport data with a large bandwidth in compact structures and devices . among the different geometries capable of routing the flow of surface plasmon , dielectric - lo...
[ { "content": "two - point correlators of heavy quarks are very useful objects for extracting parameters of qcd such as , e.g. , the quark masses and the strong coupling constant @xmath14 , both from experiment@xcite and also from the lattice@xcite . however , even our perturbative knowledge of these functions i...
[ { "content": "a skyrmion , first introduced in high - energy physics in the description of baryons,@xcite is a topologically non - trivial configuration of a continuous field @xmath2 , which is localized , in the sense that its gradient @xmath3 is significant only in a finite spatial region @xmath4 . far away f...
[ { "content": "xte j0421 + 560 was discovered by the all - sky monitor ( asm ) on the rossi x - ray timing explorer ( rxte ) on 31.64 march 1998 @xcite as the first bright x - ray transient in several years , reaching almost 2 crabs within a day of the first detection . \n corresponding radio emission was detect...
[ { "content": "the multifractal detrended fluctuation analysis ( mfdfa ) @xcite became in last ten years the major technique used for studying the multifractal properties in complex systems and in time series . \n more then 500 papers discusses mfdfa issues in variety of problems related with complexity ( see , ...
[ { "content": "the star formation ( sf ) is a fundamental process in the evolution of galaxies and is far from being well understood . \n the sf is usually characterized by the initial mass function ( imf ) and the total sf rate ( sfr ) , which depends on many factors such as the density of the interstellar gas ...
[ { "content": "eit is a non - invasive real - time functional imaging modality for the continuous monitoring of physiological functions such as lung ventilation and perfusion . \n the image contrast represents the time change of the electrical conductivity distribution inside the human body . using an array of s...
[ { "content": "high - energy electro - disintegration of the deuteron is a powerful tool to investigate , first , how and when at larger energies and momentum transfers the description in terms of hadrons ( nucleons and mesons ) transforms into the one in terms of quarks and gluons and , second , the colour tran...
[ { "content": "in this paper we reexamine and analyze the phenomenon of `` bistability '' that occurs in chemical models of dark interstellar clouds . \n bistability was first discussed by le bourlot et al . \n ( 1993 ) , who found that multiple solutions to the chemical rate - equations sometimes appear in nume...
[ { "content": "the key scheme of cavity quantum electrodynamics ( qed)@xcite , modern atom optics and interferometry @xcite is the resonant interaction of an atom with cavity fields , created as standing or counterpropagating waves . the first type ( with respective quantization on the sw basis ) is attained in...
[ { "content": "in the standard big bang model of nucleosynthesis ( sbbn ) , the light isotopes d , @xmath7he , @xmath3he and @xmath8li were produced by nuclear reactions a few minutes after the birth of the universe . \n given the number of light neutrino species @xmath9 = 3 and the neutron lifetime , the abunda...
[ { "content": "let @xmath3 be a smooth , connected , projective complex curve of genus @xmath12 . \n let @xmath11 be the hurwitz space which parametrizes degree @xmath2 coverings of @xmath3 simply branched in @xmath5 points . a classical result of hurwitz @xcite states that @xmath13 is irreducible . \n more gene...
[ { "content": "during the last decade , it was shown that quantum mechanical systems have the potential for processing information more efficiently than classical systems @xcite . \n however , it remains difficult to realize this potential because quantum systems are extremely sensitive to perturbations . \n the...
[ { "content": "turbulent thermal convection plays a key role in many of the phenomena associated with geophysical and astrophysical fluid dynamics @xcite as well as providing a well - posed problem for the study of fundamental fluid dynamics @xcite . in several important examples including oceanic deep convectio...
[ { "content": "if @xmath2 is a compact complex manifold , the algebraic dimension of @xmath2 , usually denoted by @xmath3 , is defined to be the complex dimension of a projective algebraic variety , the rational function field of which is isomorphic to that of @xmath2 . \n we always have @xmath4 , and in case of...
[ { "content": "the sunspot number is the solar index most frequently used in the study of long - term solar activity variations and , even more so , in solar - terrestrial relation studies . \n the relative sunspot number was defined by rudolf wolf @xcite as @xmath0 where @xmath1 is the number of sunspot groups ...
[ { "content": "perhaps the simplest model of noise in a quantum system is that of the isotropic depolarizing channel @xmath2 where with probability probability a quantum state @xmath3 is left untouched while with probability @xmath4 it is mapped to the completely mixed state @xmath5 @xmath6 this channel results ...
[ { "content": "evidences for the dark matter ( dm ) are provided by many astrophysical observations , although the nature of dm is yet to be uncovered . \n the most popular candidates for dm are weak interacting massive particles ( wimp ) , which we shall assume in this work . \n dm can be detected either direct...
[ { "content": "polypeptide helices are a key secondary structure motif in a wide range of proteins @xcite . \n it is well known that some amino acids ( e.g. , alanine ) exhibit a stronger helix propensity than others @xcite , but the fact that the helical structure is so abundant in proteins is still intriguing ...
[ { "content": "in the preceding paper@xcite we suggested a new method for ab - initio electronic - structure calculations of solids . \n the main steps of this procedure are : 1 . \n perform a conventional , self - consistent , band - structure calculation for an effective one - particle hamiltonian , namely ...
[ { "content": "the nature of unidentified high - energy @xmath0-ray sources in the galaxy was one of the major unanswered questions at the end of the egret era . \n the third egret catalog contained 170 unidentified sources , 74 of which were at galactic latitude @xmath10@xcite . \n rotation - powered pulsars ar...
[ { "content": "power corrections to event shape observables in @xmath1 annihilation have been an active field of research in the recent years . \n event shapes , as opposed to other inclusive observables , do not have an operator product expansion , so there is no established field theoretic framework to analyse...
[ { "content": "in the last few years the astronomical community has moved much closer to unveiling the nature of grbs . \n the discovery of afterglows and identification of host galaxies for several bursts clearly links grbs to some type of stellar events . \n yet the nature of these events is unknown , and we s...
[ { "content": "the penrose cosmic censorship states that : if singularities predicted by general relativity @xcite occur , they must be dressed by event horizons @xcite . \n hence , the search of the regular black hole solutions has been a focus of research interests lately @xcite . \n in fact , the study of glo...
[ { "content": "one of the hurdles for identifying clinically meaningful patterns in medical data is the fact that much of that data is sparsely , irregularly , and asynchronously observed , rendering it a poor substrate for many pattern recognition algorithms . \n a large class of this problematic data in medica...