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math0503267
i
in recent years , the problem of finding index formulas for elliptic pseudodifferential operators on singular manifolds has been studied in numerous papers ( e.g. , see plamenevsky - rozenblum @xcite , melrose - nistor @xcite , rozenblum @xcite , schulze - sternin - shatalov @xcite , nazaikinskii - sternin @xcite ...
a new approach to the construction of index formulas for elliptic operators on singular manifolds is suggested on the basis of-theory of algebras and cyclic cohomology . the equivalence of toeplitz and pseudodifferential quantizations , well known in the case of smooth closed manifolds , is extended to the case of mani...
a new approach to the construction of index formulas for elliptic operators on singular manifolds is suggested on the basis of-theory of algebras and cyclic cohomology . the equivalence of toeplitz and pseudodifferential quantizations , well known in the case of smooth closed manifolds , is extended to the case of mani...
1008.1898
i
the concept of a soliton as a localized particle - like excitation that preserves its shape can be extended to systems that are far from thermodynamic equilibrium through the concept of a `` dissipative soliton '' @xcite . this allows us to analyze a broad range of physical , chemical , and biological nonlinear systems...
a novel type of solitary wave is predicted to form in spin torque oscillators when the free layer has a sufficiently large perpendicular anisotropy . in this structure , which is a dissipative version of the conservative droplet soliton originally studied in 1977 by ivanov and kosevich asymptotic methods are used to de...
a novel type of solitary wave is predicted to form in spin torque oscillators when the free layer has a sufficiently large perpendicular anisotropy . in this structure , which is a dissipative version of the conservative droplet soliton originally studied in 1977 by ivanov and kosevich , spin torque counteracts the dam...
1004.3120
i
muscle is a bundle of cylindrical muscle fibres . one muscle fibre enclose hundreds of thinner cylindrical fibre called fibril . a fibril is a train of sarcommeres connected head to tail . the sarcomere , as seen by light microscopy , is a composite structure of actin filament and myosin filament(fig . [ muscle ] ) . t...
we proposed quantum many - particle hamiltonian to predict the force - velocity relation for the slow release of muscle fibre which has no empirical relation yet , it is much more complicate than hyperbolic relation . using the same hamiltonian , we predicted the mathematical force - velocity relation when the muscle i...
a quantum chain model of many molecule motors is proposed as a mathematical physics theory on the microscopic modeling of classical force - velocity relation and tension transients of muscle fibre . we proposed quantum many - particle hamiltonian to predict the force - velocity relation for the slow release of muscle f...
q-bio0511004
i
the choice of the coordinates used to describe a molecule is an important issue if computational considerations are to be taken into account and the efficiency of the simulations is pursued . this choice also affects the coding of applications . if cumbersomely defined coordinates are used , an unnecessary complexity m...
a set of rules is defined to systematically number the groups and the atoms of organic molecules and , particularly , of polypeptides in a modular manner . supported by this numeration , a set of internal coordinates is defined . these coordinates ( termed systematic , approximately separable and modular internal coord...
a set of rules is defined to systematically number the groups and the atoms of organic molecules and , particularly , of polypeptides in a modular manner . supported by this numeration , a set of internal coordinates is defined . these coordinates ( termed systematic , approximately separable and modular internal coord...
hep-th0410229
i
while de sitter space shares the same number of isometries as minkowski space , field theories exhibit some surprising properties in this simplest of curved backgrounds . an immediate example is the enormous stretching of scales in de sitter space which naturally connects short distances in the past to large distances ...
a spin particle propagating in a de sitter background has a one parameter family of states which transform covariantly under the isometry group of the background . we shall show how using a point - source propagator for a fermion in an-state produces divergent perturbative corrections . these corrections can not be use...
a spin particle propagating in a de sitter background has a one parameter family of states which transform covariantly under the isometry group of the background . these states are the fermionic analogues of the-vacua for a scalar field . we shall show how using a point - source propagator for a fermion in an-state pro...
cond-mat9809351
i
in colloidal suspensions the interaction between the mesoscopic dissolved particles and the solvent is of basic importance @xcite . for example , the solvent generates effective interactions between the colloidal particles which can even lead to flocculation . the richness of the physical properties of these systems is...
the temperature dependence of the corresponding order parameter profiles and of the excess adsorption are calculated explicitly . critical adsorption on elongated rods is substantially more pronounced than on spherical particles . it turns out that , within the context of critical phenomena in confined geometries , cri...
a systematic fieldtheoretic description of critical adsorption on curved objects such as spherical or rodlike colloidal particles immersed in a fluid near criticality is presented . the temperature dependence of the corresponding order parameter profiles and of the excess adsorption are calculated explicitly . critical...
1607.05530
i
in 1894 , with their pioneering work on free - recall experiments , binet and henry introduced a key tool for the controlled investigation of short - term memory ( binet and henry , 1894 ) . in its traditional form , a free - recall experiment is performed by presenting the subject with a list of words and then request...
the observation that lists of short words are recalled better than lists of long ones has been a long - standing subject of controversy , further complicated by the apparent inversion of the effect for mixed lists . in the framework here proposed , these behaviors emerge as an effect of the different level of localizat...
a theoretical framework is proposed for the understanding of verbal perception the conversion of words into meaning , modeled as a compromise between lexical demands and contextual constraints and the theory is tested against experiments on short - term memory . the observation that lists of short words are recalled ...
1005.2147
i
it is usually claimed that the quantum state of the universe is described by a wavefunction @xcite which should account for all the physical information which can be extracted from the universe . two main approaches have been followed in order to obtain such a wavefunction of the universe . first , it can be obtained a...
a third quantization formalism is applied to a simplified multiverse scenario . a well defined quantum state of the multiverse is obtained which agrees with standard boundary condition proposals . these states are found to be squeezed , and related to accelerating universes : they share similar properties to those obta...
a third quantization formalism is applied to a simplified multiverse scenario . a well defined quantum state of the multiverse is obtained which agrees with standard boundary condition proposals . these states are found to be squeezed , and related to accelerating universes : they share similar properties to those obta...
0805.3814
c
in conclusion , we have studied the extension to two spatial dimensions of a one - dimensional model describing coupled optical waveguides going beyond the lowest - order approximation and including nonlinear coupling , which , e.g. , is relevant for arrays of linear waveguides embedded in nonlinear media . the phenome...
we find that despite a vanishing energy difference ( peierls - nabarro barrier ) of fundamental stationary modes the mobility of localized excitations is very poor . this is attributed to a large separation in parameter space of the bifurcation points of the involved stationary modes . at these points the stability of ...
a two - dimensional nonlinear schrdinger lattice with nonlinear coupling , modelling a square array of weakly coupled linear optical waveguides embedded in a nonlinear kerr material , is studied . we find that despite a vanishing energy difference ( peierls - nabarro barrier ) of fundamental stationary modes the mobili...
1601.01886
i
a _ repetition _ of length @xmath7 ( @xmath8 ) in a sequence of symbols is a subsequence of consecutive terms of the form @xmath9 . a sequence is _ nonrepetitive _ ( or _ square - free _ ) if it does not contain a repetition of any length . in 1906 thue proved that there exist arbitrarily long nonrepetitive sequences o...
a vertex coloring of a graph is _ nonrepetitive _ if there is no path in the graph whose first half receives the same sequence of colors as the second half . while every tree can be nonrepetitively colored with a bounded number of colors ( colors is enough ) , fiorenzi , ochem , ossona de mendez , and zhu recently show...
a vertex coloring of a graph is _ nonrepetitive _ if there is no path in the graph whose first half receives the same sequence of colors as the second half . while every tree can be nonrepetitively colored with a bounded number of colors ( colors is enough ) , fiorenzi , ochem , ossona de mendez , and zhu recently show...
0802.0326
c
ab dor , speedy mic and rst 137b represent young ( @xmath0 100myr ) rapidly rotating ( p@xmath7612hr ) late - type stars lying at the saturated - supersaturated corona boundary region . based on an analysis of high resolution _ chandra _ x - ray spectra of these stars and subsequent comparison with results for other ...
plasma emission measure distributions as a function of temperature show broad peaks at k. differences between stars suggest that as supersaturation is reached the dem slope below the temperature of peak dem becomes shallower , while the dem drop - off above this temperature becomes more pronounced . a larger sample co...
ab dor , speedy mic and rst 137b are in their early post - t tauri evolutionary phase ( 100 myr ) , at the age of fastest rotation in the life of late - type stars . they straddle the coronal saturation - supersaturation boundary first defined by young stars in open clusters . high resolution _ chandra _ x - ray spe...
0708.2818
i
ads / cft correspondence @xcite is a useful framework to analyze strongly coupled yang - mills ( ym ) theories , and its application to quark - hadron physics is one of the important subjects from the phenomenological point of view . since macroscopic properties of quark - hadron systems , based on thermodynamics and h...
abstract we present a closed framework of ads / cft with finite-charge chemical potential . we show how the gauge - invariant identification of the chemical potential with the bulk gauge field emerges from the standard ads / cft dictionary . physical importance and necessity of the minkowski embeddings within the pr...
abstract we present a closed framework of ads / cft with finite-charge chemical potential . we show how the gauge - invariant identification of the chemical potential with the bulk gauge field emerges from the standard ads / cft dictionary . physical importance and necessity of the minkowski embeddings within the pr...
0708.2818
r
now , we would like to bring our attention to the claim presented in ref . @xcite . the authors of ref . @xcite pointed out the necessity of the charged source at @xmath117 , and they provided it by adding @xmath0-charge carrying objects to the system . their idea is to put fundamental strings ( f1 s ) between the d7-b...
we point out that the d3-d7 model with only the black - hole embeddings does not have the low - temperature and low - chemical - potential region in the grand - canonical ensemble , hence it is incomplete . a physical interpretation that explains these numerical results is also proposed . 0.5 cm
abstract we present a closed framework of ads / cft with finite-charge chemical potential . we show how the gauge - invariant identification of the chemical potential with the bulk gauge field emerges from the standard ads / cft dictionary . physical importance and necessity of the minkowski embeddings within the pr...
astro-ph0405170
i
most galactic nuclei are now believed to harbor supermassive black holes . these black holes are all accreting gas at a minimum from the interstellar medium proximate to the event horizon , and in some cases from dense disks of gas in orbit around the hole . the observational signatures of this accretion , however , d...
accretion onto supermassive black holes produces both the dramatic phenomena associated with active galactic nuclei and the underwhelming displays seen in the galactic center and most other nearby galaxies . i review selected aspects of the current theoretical understanding of black hole accretion , emphasizing the rol...
accretion onto supermassive black holes produces both the dramatic phenomena associated with active galactic nuclei and the underwhelming displays seen in the galactic center and most other nearby galaxies . i review selected aspects of the current theoretical understanding of black hole accretion , emphasizing the rol...
1404.0184
i
the first modern explanation of the chemical bond between two neutral hydrogen atoms was put forth in 1927 by heitler and london @xcite , and is one of the earliest applications of quantum theory , specifically that of schrdinger s wave mechanics formulation in 1926 @xcite . heitler and london showed that by accounti...
accurate experimental values for the vibrational ground tone or fundamental vibrational energy splitting of h , hd , and d are presented . a comparison is made with full _ ab initio _ calculations encompassing born - oppenheimer energies , adiabatic and non - adiabatic corrections , as well as relativistic corrections ...
accurate experimental values for the vibrational ground tone or fundamental vibrational energy splitting of h , hd , and d are presented . absolute accuracies of are obtained from doppler - free laser spectroscopy applied in a collisionless environment . the vibrational splitting frequencies are derived from the combin...
1404.0184
c
the fundamental vibrational energy splitting of h@xmath0 , hd , and d@xmath0 were determined to absolute accuracies of @xmath1 @xmath2 , or a relative accuracy of a few parts in @xmath105 . the vibrational splitting frequencies are derived from the combination difference between separate electronic excitations from the...
absolute accuracies of are obtained from doppler - free laser spectroscopy applied in a collisionless environment . the vibrational splitting frequencies are derived from the combination difference between separate electronic excitations from the and vibrational states to a common state . the experimental procedures le...
accurate experimental values for the vibrational ground tone or fundamental vibrational energy splitting of h , hd , and d are presented . absolute accuracies of are obtained from doppler - free laser spectroscopy applied in a collisionless environment . the vibrational splitting frequencies are derived from the combin...
1112.6212
i
adaptive network consists of a collection of agents that are interconnected to each other and solve distributed estimation and inference problems in a collaborative manner . two useful strategies that enable adaptation and learning over such networks in real - time are the incremental strategy @xcite and the diffusion ...
adaptive networks rely on in - network and collaborative processing among distributed agents to deliver enhanced performance in estimation and inference tasks . information is exchanged among the nodes , usually over noisy links . the combination weights that are used by the nodes to fuse information from their neighbo...
adaptive networks rely on in - network and collaborative processing among distributed agents to deliver enhanced performance in estimation and inference tasks . information is exchanged among the nodes , usually over noisy links . the combination weights that are used by the nodes to fuse information from their neighbo...
1112.6212
c
in this work we investigated the performance of diffusion algorithms under several sources of noise during information exchange and under non - stationary environments . we first showed that , on one hand , the link noise over the regression data biases the estimators and deteriorates the conditions for mean and mean -...
this paper first investigates the mean - square performance of general adaptive diffusion algorithms in the presence of various sources of imperfect information exchanges , quantization errors , and model non - stationarities . among other results we use these observations to show how the combination weights can be opt...
adaptive networks rely on in - network and collaborative processing among distributed agents to deliver enhanced performance in estimation and inference tasks . information is exchanged among the nodes , usually over noisy links . the combination weights that are used by the nodes to fuse information from their neighbo...
1610.02457
i
aiming at deriving a statistically well - justified galactic center distance based on a large variety of tracers and reducing any occurrence of publication bias , we embarked on an extensive data - mining effort of the scientific literature , eventually yielding 273 new or revised @xmath0 estimates published since reco...
aiming at deriving a statistically well - justified galactic center distance , , and reducing any occurrence of publication bias , we compiled the most comprehensive and most complete database of galactic center distances available to date , containing 273 new or revised estimates published since records began in octob...
aiming at deriving a statistically well - justified galactic center distance , , and reducing any occurrence of publication bias , we compiled the most comprehensive and most complete database of galactic center distances available to date , containing 273 new or revised estimates published since records began in octob...
1506.07444
c
the main results are summarized here . \1 ) approximate solutions in closed form are obtained for the 5-dimensional bohr hamiltonian with the woods saxon potential , using the pekeris approximation and the exact solutions of an extended woods saxon potential in one dimension , featuring a dip near its surface . \2 ) ...
approximate analytical solutions in closed form are obtained for the 5-dimensional bohr hamiltonian with the woods saxon potential , taking advantage of the pekeris approximation and the exactly soluble one - dimensional extended woods comparison to the data for several-unstable and prolate deformed nuclei indicates ...
approximate analytical solutions in closed form are obtained for the 5-dimensional bohr hamiltonian with the woods saxon potential , taking advantage of the pekeris approximation and the exactly soluble one - dimensional extended woods saxon potential with a dip near its surface . comparison to the data for several-u...
1401.8272
i
it is a great honor for me to be invited at the seventh international conference on geometry and topology of manifolds , dedicated to the mathematical legacy of charles ehresmann . i enjoyed with great pleasure the hospitality of the mathematical research and conference center of the polish academy of sciences , and i ...
around 1923 , lie cartan introduced affine connections on manifolds and defined the main related concepts : torsion , curvature , holonomy groups . lie cartan extended these concepts for other types of connections on a manifold : euclidean , galilean and minkowskian connections which can be considered as special types ...
around 1923 , lie cartan introduced affine connections on manifolds and defined the main related concepts : torsion , curvature , holonomy groups . he discussed applications of these concepts in classical and relativistic mechanics ; in particular he explained how parallel transport with respect to a connection can be ...
1609.04129
i
a particularly interesting direction within the landscape of topological systems is to realize topological superconductivity . within condensed matter physics there has been a significant effort to find systems that exhibit topological superconductivity as such systems are predicted to harbor the , heretofore , elusive...
as a promising candidate system to realize topological superconductivity , the system of a 3d topological insulator ( ti ) grown on top of the-wave superconductor has been extensively studied . to access the topological superconductivity experimentally , the 3d ti sample must be thin enough to allow for cooper pair tun...
as a promising candidate system to realize topological superconductivity , the system of a 3d topological insulator ( ti ) grown on top of the-wave superconductor has been extensively studied . to access the topological superconductivity experimentally , the 3d ti sample must be thin enough to allow for cooper pair tun...
1206.4313
m
to model cloudy t dwarf atmospheres , we modify the am01 cloud model . this model has successfully been used to model the effects of the iron , silicate , and corundum clouds on the spectra of l dwarfs saumon08,stephens09 . here , we do not include the opacity of iron , silicate , and corundum clouds ; based on observe...
are calculated using the am01 cloud model , which is coupled to an atmosphere model to produce atmospheric pressure - temperature profiles in radiative - convective equilibrium . the emergence of sulfide clouds in cool atmospheres , particularly nas , may be a more natural explanation for the `` cloudy '' spectra of th...
as brown dwarfs cool , a variety of species condense in their atmospheres , forming clouds . iron and silicate clouds shape the emergent spectra of l dwarfs , but these clouds dissipate at the l / t transition . a variety of other condensates are expected to form in cooler t dwarf atmospheres . these include cr , mns ,...
1206.4313
i
cloud formation is a natural and unavoidable phenomenon in cool substellar atmospheres . at temperatures cooler than those of l dwarfs , chemistry dictates that additional condensates , beyond the silicates and iron , must form . we have examined the effect of including the most abundant of these lower - temperature co...
these include cr , mns , nas , zns , and kcl , but the opacity of these optically thinner clouds has not been included in previous atmosphere models . here , we examine their effect on model t and y dwarf atmospheres . the cloud structures and opacities we generate a suite of models between = 400 and 1300 k , log=4.0 ...
as brown dwarfs cool , a variety of species condense in their atmospheres , forming clouds . iron and silicate clouds shape the emergent spectra of l dwarfs , but these clouds dissipate at the l / t transition . a variety of other condensates are expected to form in cooler t dwarf atmospheres . these include cr , mns ,...
1407.4820
i
during the brief history of extrasolar planet investigations , our understanding of the relative populations of different types of planets has been limited by the observational biases of the techniques employed . with the advent of sophisticated transit searches and hypersensitive radial velocity measurements , signifi...
these results complement previously published m dwarf planet occurrence rates by providing astrometrically determined upper mass limits on potential super - jupiter companions at orbits of two years and longer . as part of a continuing survey , these results are consistent with the paucity of super - jupiter and brown ...
astrometric measurements are presented for seven nearby stars with previously detected planets : six m dwarfs ( gj 317 , gj 667c , gj 581 , gj 849 , gj 876 , and gj 1214 ) and one k dwarf ( bd 3166 ) . measurements are also presented for six additional nearby m dwarfs without known planets , but which are more favorabl...
1407.4820
r
table [ tab1 ] gives the parallax and proper motion results for the 16 systems , with details about the astrometric observations ( filters used , number of seasons observed , number of frames used in reductions , time coverage , span of time , and the number of reference stars ) and results ( relative parallaxes , para...
astrometric measurements are presented for seven nearby stars with previously detected planets : six m dwarfs ( gj 317 , gj 667c , gj 581 , gj 849 , gj 876 , and gj 1214 ) and one k dwarf ( bd 3166 ) . measurements are also presented for six additional nearby m dwarfs without known planets , but which are more favorabl...
astrometric measurements are presented for seven nearby stars with previously detected planets : six m dwarfs ( gj 317 , gj 667c , gj 581 , gj 849 , gj 876 , and gj 1214 ) and one k dwarf ( bd 3166 ) . measurements are also presented for six additional nearby m dwarfs without known planets , but which are more favorabl...
1606.06770
i
the detailed study of unstable nuclei was a major subject in nuclear physics during recent decades . @xmath0 decay measurements provide not only important information on the structure of the daughter and parent nuclei , but can also be used to inform nuclear astrophysics studies and probe fundamental subatomic symmetri...
background : : measurements of decay provide important nuclear structure information that can be used to probe isospin asymmetries and inform nuclear astrophysics studies . a complete -decay scheme was built for the allowed transitions to bound excited states ofsi .
background : : measurements of decay provide important nuclear structure information that can be used to probe isospin asymmetries and inform nuclear astrophysics studies . purpose : : to measure the-delayed decay ofp and compare the results with previous experimental results and shell - model calcula...
1606.06770
r
as mentioned in sec . [ sec : intro ] , the data presented in this paper are from the same experiment described in refs . @xcite , but independent sorting and analysis routines were developed and employed . the values extracted are therefore slightly different , but consistent within uncertainties . new values derived ...
positrons emitted in the decay were detected in coincidence to reduce the background . results : : the absolute intensities ofp -delayed-rays were determined . values and gamow - teller strengths were also determined for these transitions and compared with shell model calculations and the mirror -de...
background : : measurements of decay provide important nuclear structure information that can be used to probe isospin asymmetries and inform nuclear astrophysics studies . purpose : : to measure the-delayed decay ofp and compare the results with previous experimental results and shell - model calcula...
1606.06770
c
we have measured the absolute @xmath1-ray intensities and deduced the @xmath0-decay branches for the decay of @xmath2p to bound states and low - lying resonances of @xmath2si . we have observed six new @xmath0-decay branches and 15 @xmath1-ray lines never observed before in @xmath2p @xmath0 decay , likely corresponding...
a total of six new-decay branches and 15 new -ray lines have been observed for the first time inp-decay . conclusions : : a very good agreement with theoretical predictions based on the usdb shell model is observed . the significant mirror asymmetry observed for the transition to the first excited state ...
background : : measurements of decay provide important nuclear structure information that can be used to probe isospin asymmetries and inform nuclear astrophysics studies . purpose : : to measure the-delayed decay ofp and compare the results with previous experimental results and shell - model calcula...
1502.02862
c
both an empirical wave in free flow ( figs . [ breakdown ] ( b ) and [ nuclei1996_2 ] ) and a localized congested pattern ( wide moving jam in fig . [ breakdown ] ( c ) ) become to be nuclei for traffic breakdown , when they reach the effective location of a highway bottleneck . however , the propagation of a single...
based on an empirical study of real field traffic data measured in 19962014 through road detectors installed on german freeways , we reveal physical features of empirical nuclei for spontaneous traffic breakdown in free flow at highway bottlenecks . it is shown that the source of a nucleus for traffic breakdown is the ...
based on an empirical study of real field traffic data measured in 19962014 through road detectors installed on german freeways , we reveal physical features of empirical nuclei for spontaneous traffic breakdown in free flow at highway bottlenecks . it is shown that the source of a nucleus for traffic breakdown is the ...
1602.08845
i
big data analytics is a major topic in contemporary data management and machine learning research and practice . many platforms , e.g. , optiml @xcite , graphlab @xcite , systemml @xcite , vowpal wabbit @xcite , simsql @xcite , glade @xcite and libraries , e.g. , madlib @xcite , bismarck @xcite , mllib @xcite ,...
it generalizes big data analytics which is targeted at how to train memory - resident models over out - of - memory training data . in this paper , we propose an in - database solution for big model analytics . the paramount challenge in designing the dot - product join operator is how to optimally schedule access to t...
big model analytics tackles the training of massive models that go beyond the available memory of a single computing device , e.g. , cpu or gpu . it generalizes big data analytics which is targeted at how to train memory - resident models over out - of - memory training data . in this paper , we propose an in - databas...
1604.04789
i
the world wide power grid can be considered one of the greatest masterpiece of engineering that human being has ever made . moreover , starting from the first industrial revolution , smart grids ( sgs ) are one of the most important breakthrough that science and engineering fields are carrying out . currently , the sma...
bio - inspired algorithms like genetic algorithms and fuzzy inference systems ( fis ) are nowadays widely adopted as hybrid techniques in commercial and industrial environment . in this paper we present an interesting application of the fuzzy - ga paradigm to smart grids . the main aim consists in performing decision m...
bio - inspired algorithms like genetic algorithms and fuzzy inference systems ( fis ) are nowadays widely adopted as hybrid techniques in commercial and industrial environment . in this paper we present an interesting application of the fuzzy - ga paradigm to smart grids . the main aim consists in performing decision m...
1604.04789
c
computational intelligence techniques are today a consolidated framework for solving engineering problems such as challenges arising in smart grid context . in this paper we study a portion of a smart grid , acting as a microgrid , characterized by the presence of renewable sources and equipped with a bess unit allowin...
in particular this study focuses on the application of a hierarchical genetic algorithm ( hga ) for tuning the rule base ( rb ) of a fuzzy inference system ( fis ) , trying to discover a minimal fuzzy rules set in a fuzzy logic controller ( flc ) adopted to perform decision making in the microgrid .
bio - inspired algorithms like genetic algorithms and fuzzy inference systems ( fis ) are nowadays widely adopted as hybrid techniques in commercial and industrial environment . in this paper we present an interesting application of the fuzzy - ga paradigm to smart grids . the main aim consists in performing decision m...
gr-qc0610131
i
it is well known within the framework of black - hole perturbation theory @xcite that quasi - normal modes ( qnms ) ( i.e. , exponentially damped harmonic oscillations ) dominate the gravitational - wave response of a non - spherically distorted black hole if the corresponding frequencies are part of the fourier spect...
the matter models considered include quadrupolar dust shells and thick accretion disks , permitting us to simulate situations which may be encountered at the end stages of stellar gravitational collapse or binary neutron star merger . we focus on the interference pattern appearing in the energy spectra of the emitted g...
by combining the numerical solution of the nonlinear hydrodynamics equations with the solution of the linear inhomogeneous zerilli - moncrief and regge - wheeler equations we investigate the properties of the gravitational radiation emitted during the axisymmetric accretion of matter onto a schwarzschild black hole . t...
gr-qc0610131
c
by performing numerical simulations that combine the solution of the nonlinear hydrodynamics equations with that of the linear inhomogeneous zerilli - moncrief and regge - wheeler equations , we have studied the features of the gravitational - wave signals generated by the accretion of matter onto a schwarzschild black...
by combining the numerical solution of the nonlinear hydrodynamics equations with the solution of the linear inhomogeneous zerilli - moncrief and regge - wheeler equations we investigate the properties of the gravitational radiation emitted during the axisymmetric accretion of matter onto a schwarzschild black hole . o...
by combining the numerical solution of the nonlinear hydrodynamics equations with the solution of the linear inhomogeneous zerilli - moncrief and regge - wheeler equations we investigate the properties of the gravitational radiation emitted during the axisymmetric accretion of matter onto a schwarzschild black hole . t...
1302.4748
i
the pairing symmetry of the superconducting state in iron - based superconductors ( ibs ) has been one of the most debated subjects since their first discovery , in both theory and experiments.@xcite its determination is particularly challenging in the ibs for their complex electronic structure , with a strong multiban...
by means of space - group symmetry arguments , we argue that the electronic pairing in iron - based high temperature superconductors shows a structure which is a linear combination of _ planar _ s - wave and d - wave symmetry channels , both preserving the 3-dimensional irreducible representation of the corresponding c...
by means of space - group symmetry arguments , we argue that the electronic pairing in iron - based high temperature superconductors shows a structure which is a linear combination of _ planar _ s - wave and d - wave symmetry channels , both preserving the 3-dimensional irreducible representation of the corresponding c...
gr-qc0701166
i
penrose s definition of _ asymptotic simplicity _ is an attempt to provide a characterisation of isolated systems in general relativity @xcite . it offers a framework on which diverse notions of physical interest can be defined and handled in a precise and rigorous manner . there is , however , a notorious lack of nont...
certain aspects of the behaviour of the gravitational field near null and spatial infinity for the developments of asymptotically euclidean , conformally flat initial data sets are analysed . the decay of the weyl tensor for the developments of the class of initial data under consideration is analysed under some existe...
certain aspects of the behaviour of the gravitational field near null and spatial infinity for the developments of asymptotically euclidean , conformally flat initial data sets are analysed . ideas and results from two different approaches are combined : on the one hand the null infinity formalism related to the asympt...
1305.3530
i
the problem of checking the _ validity _ of quasiequations in finitely generated ( i.e. , generated by a finite set of finite algebras ) quasivarieties or , similarly , checking consequences from finite sets of formulas in finite - valued logics , is decidable and has been investigated extensively in the literature . i...
checking the admissibility of quasiequations in a finitely generated ( i.e. , generated by a finite set of finite algebras ) quasivariety amounts to checking validity in a suitable finite free algebra of the quasivariety , and is therefore decidable . however , since free algebras may be large even for small sets of sm...
checking the admissibility of quasiequations in a finitely generated ( i.e. , generated by a finite set of finite algebras ) quasivariety amounts to checking validity in a suitable finite free algebra of the quasivariety , and is therefore decidable . however , since free algebras may be large even for small sets of sm...
1503.07819
i
it is commonly known that variational methods are a powerful tool for studying the dynamics of various physical systems , e.g.,quantum molecular dynamics @xcite , fluid mechanics @xcite , classical motion of single particles and collective processes in plasmas @xcite , and wave propagation in both linear and nonlinear ...
classical variational principles can be deduced from quantum variational principles via formal reparameterization of the latter . it is shown that such reparameterization is possible without invoking any assumptions other than classicality and without appealing to dynamical equations . as examples , first principle var...
classical variational principles can be deduced from quantum variational principles via formal reparameterization of the latter . it is shown that such reparameterization is possible without invoking any assumptions other than classicality and without appealing to dynamical equations . as examples , first principle var...
1304.5498
i
clique - width is a fundamental graph invariant that has been widely studied in combinatorics and computer science . clique - width measures in a certain sense the `` complexity '' of a graph . it is defined via a graph construction process involving four operations where only a limited number of vertex labels are avai...
clique - width is a graph invariant that has been widely studied in combinatorics and computer science . however , computing the clique - width of a graph is an intricate problem , the exact clique - width is not known even for very small graphs . we present a new method for computing the clique - width of graphs based...
clique - width is a graph invariant that has been widely studied in combinatorics and computer science . however , computing the clique - width of a graph is an intricate problem , the exact clique - width is not known even for very small graphs . we present a new method for computing the clique - width of graphs based...
astro-ph0211430
i
fluctuations in the cosmic microwave background ( cmb ) radiation can provide information about hot gas in galaxy clusters over a wide range of redshifts ( sunyaev & zeldovich 1972,1980 ( hereafter sz ) , and @xcite ) . on arcminute angular scales and smaller , the thermal sz contribution to the cmb anisotropy is expec...
clusters of galaxies produce negative features at wavelengths mm in cmb maps , by means of the thermal sz effect , while point radio sources produce positive peaks . [ firstpage ] cosmology : cosmic microwave background cosmology : observations galaxies : clusters : general .
clusters of galaxies produce negative features at wavelengths mm in cmb maps , by means of the thermal sz effect , while point radio sources produce positive peaks . this fact implies that a distribution of unresolved sz clusters could be detected using the negative asymmetry introduced in the odd - moments of the brig...
astro-ph0211430
c
in this paper we have discussed five statements : * the contribution of sz clusters to the map noise at @xmath0 mm does not depend on the wavelength , and has a strong and peculiar non - gaussian negative tail in the @xmath6 function . * this contribution has characteristic negative skewness ( or bispectrum ) at @xm...
this property provides a consistency check to the recent detections from cbi and bima experiments of an excess of power at small angular scales , in order to confirm that they are produced by a distribution of unresolved sz clusters . this approach could also be used with the data of the planned sz experiments ( e.g. a...
clusters of galaxies produce negative features at wavelengths mm in cmb maps , by means of the thermal sz effect , while point radio sources produce positive peaks . this fact implies that a distribution of unresolved sz clusters could be detected using the negative asymmetry introduced in the odd - moments of the brig...
astro-ph0105527
i
star formation has been a long - standing target in astrophysics . the infrared protostar distribution revealed that the molecular cloud cores , which coincide with relatively high - density part ( @xmath2 ) of the molecular clouds , are the sites of star formation . the observed molecular cloud cores are divided into ...
the gas with excess angular momentum near the surface is finally ejected , which explains the molecular bipolar outflow . two types of outflows are observed . it is found that another outflow is ejected around the second atomic core , which seems to correspond to the optical jets or the fast neutral winds .
collapse of the rotating magnetized molecular cloud core is studied with the axisymmetric magnetohydrodynamical ( mhd ) simulations . due to the change of the equation of state of the interstellar gas , the molecular cloud cores experience several different phases as collapse proceeds . in the isothermal run - away col...
astro-ph0105527
r
in model a , we calculated the evolution with @xmath83 , @xmath84 , @xmath85 , and @xmath86 . we summarized the adopted parameters in table [ table2 ] . similar to the _ non - rotational _ magnetized cloud [ see figs . 2b and 2c of @xcite ] , the cylindrical cloud fragments into prolate spheroidal shape whose wavelengt...
, the angular momentum is transferred from the disk mid - plane to the surface . when the poloidal magnetic field is strong ( magnetic energy is comparable to the thermal one ) , a u - shaped outflow is formed in which fast moving gas is confined to the wall whose shape looks like a capital letter u. the other is the t...
collapse of the rotating magnetized molecular cloud core is studied with the axisymmetric magnetohydrodynamical ( mhd ) simulations . due to the change of the equation of state of the interstellar gas , the molecular cloud cores experience several different phases as collapse proceeds . in the isothermal run - away col...
astro-ph0105527
i
we have explored the evolution of a magnetized interstellar cloud rotating around the symmetric axis . following the change in the equation of state of the interstellar gas @xcite , the cloud experiences several phases before going to a star , that is , the isothermal run - away collapse , the slowly contracting core c...
collapse of the rotating magnetized molecular cloud core is studied with the axisymmetric magnetohydrodynamical ( mhd ) simulations . due to the change of the equation of state of the interstellar gas , the molecular cloud cores experience several different phases as collapse proceeds . in the isothermal run - away col...
collapse of the rotating magnetized molecular cloud core is studied with the axisymmetric magnetohydrodynamical ( mhd ) simulations . due to the change of the equation of state of the interstellar gas , the molecular cloud cores experience several different phases as collapse proceeds . in the isothermal run - away col...
1509.01985
c
the popular density - matrix functionals , the mller functional@xcite , the hartree - fock approximation and the power functional@xcite , which continuously interpolates between the other two , have been benchmarked for the hubbard dimer . the hartree - fock approximation is , for the hubbard model@xcite , analogous to...
common density - matrix functionals , the mller and the power functional , have been benchmarked for the half - filled hubbard dimer , which allows to model the bond dissociation problem and the transition from the weakly to the strongly correlated limit . the power functional actually favors the ferromagnetic state fo...
common density - matrix functionals , the mller and the power functional , have been benchmarked for the half - filled hubbard dimer , which allows to model the bond dissociation problem and the transition from the weakly to the strongly correlated limit . unbiased numerical calculations are combined with analytical re...
hep-th9805123
i
the advance in the ability to analyze strong coupling effects in supersymmetric field theories @xcite led to a verification of some qualitative ideas about the behavior of gauge field theories . in particular , confinement in @xmath0 supersymmetric qcd ( sqcd ) was shown @xcite to be related , as expected , to monopole...
the electric flux tubes are identified as m2 branes ending on the m5 branes and the conserved charge they carry is identified as a topological property . the group of charges carried by the flux tubes is calculated and the results agree in all cases considered with the field theoretical expectations . in particular , w...
confinement and screening are investigated in susy gauge theories , realized by an m5 brane configuration , extending an approach applied previously to sym theory , to other models . the electric flux tubes are identified as m2 branes ending on the m5 branes and the conserved charge they carry is identified as a topolo...
hep-th9805123
i
in this work we used the realization of supersymmetric gauge theories in m theory to investigate confinement and screening . we considered the following ( @xmath0 supersymmetric ) models : * @xmath9 susy @xmath7 gauge theory with @xmath20 fundamental flavors , perturbed by a polynomial superpotential for the adjoint...
ri-5 - 98 + cern - th-98 - 184 + hep - th/9805123 + 255= 255 by 60 255 by-60 255 by // + + shmuel elitzur , oskar pelc and eliezer rabinovici + _racah institute of physics , the hebrew university + jerusalem , 91904 , israel _ + and + _ theory division , cern + ch-1211 geneva 23 , switzerland _ + e - mail : elitz...
confinement and screening are investigated in susy gauge theories , realized by an m5 brane configuration , extending an approach applied previously to sym theory , to other models . the electric flux tubes are identified as m2 branes ending on the m5 branes and the conserved charge they carry is identified as a topolo...
1406.1996
r
as pointed out in the introduction ( sec.[sec : introduction ] ) , the confinement can modify the structure of a fluid resulting in an inhomogeneous density profile . in a slit pore geometry , near the confining walls , particles form layers parallel to the walls as the temperature is decreased or the density is increa...
confinement can modify the dynamics , the thermodynamics and the structural properties of liquid water , the prototypical anomalous liquid . by considering a general anomalous liquid , suitable for globular proteins , colloids or liquid metals , we study by molecular dynamics simulations the effect of a solvophilic str...
confinement can modify the dynamics , the thermodynamics and the structural properties of liquid water , the prototypical anomalous liquid . by considering a general anomalous liquid , suitable for globular proteins , colloids or liquid metals , we study by molecular dynamics simulations the effect of a solvophilic str...
1406.1996
c
by considering many layers of a confined anomalous fluid @xcite we show that the effect of the structured solvophilic wall can extend up to the entire slit pore . in particular , we study structural and dynamical properties of a monocomponent anomalous liquid under confinement . the fluid has two characteristic distanc...
we find that at low temperatures the large density of the solvophilic wall induces a high - density , high - energy structure in the first layer ( `` templating '' effect ) . in turn therefore , although the high - density , high - energy structure does not self - reproduce further than the first layer , the structured...
confinement can modify the dynamics , the thermodynamics and the structural properties of liquid water , the prototypical anomalous liquid . by considering a general anomalous liquid , suitable for globular proteins , colloids or liquid metals , we study by molecular dynamics simulations the effect of a solvophilic str...
0809.4554
i
in @xcite , dawson and perkins introduced a population dynamic model of two populations that live on a countable site space @xmath2 . the individuals migrate between sites and , at any given site , perform a critical branching process with a branching rate proportional to the local size of the population of the respect...
consider the mutually catalytic branching process with finite branching rate . we show that as , this process converges in finite - dimensional distributions ( in time ) to a certain discontinuous process . we give descriptions of this process in terms of its semigroup in terms of the infinitesimal generator and as the...
consider the mutually catalytic branching process with finite branching rate . we show that as , this process converges in finite - dimensional distributions ( in time ) to a certain discontinuous process . we give descriptions of this process in terms of its semigroup in terms of the infinitesimal generator and as the...
astro-ph0703455
i
the simplest models of inflation involve only a single scalar field , the inflaton @xcite . with a suitably chosen potential , such a model can provide a simple explanation of the temperature fluctuations in the cmb at all angular scales @xcite . there are however a number of possible anomalies in the cmb power spectru...
we note that in this situation it is natural that there also be a spatial gradient in the initial value of the inflaton field , and that this can provide a spatial asymmetry in the observed cmb power spectrum , manifest at low values of . mpp-2009 - 57 + * non - isotropy in the cmb power spectrum in single field in...
contaldi have suggested that an initial period of kinetic energy domination in single field inflation may explain the lack of cmb power at large angular scales . we note that in this situation it is natural that there also be a spatial gradient in the initial value of the inflaton field , and that this can provide a sp...
astro-ph0104257
i
the last decade has witnessed an explosive growth of high - quality data for supernovae both from the space and ground observatories with spectacular results , and new perspectives for the use of sne ia as cosmological yard sticks and for constraining the physics of supernovae . one of the most important new developme...
based on the structures for the wd , detailed model calculations have been performed for the hydrodynamical explosion , nucleosynthesis and light curves . the metallicity alters the isotopic composition of the outer layers of the ejecta . we use our results and recent observations to constrain the progenitors , and ...
detailed stellar evolution calculations have been performed to quantify the influence of the main sequence mass and the metallicity z of the progenitor on the structure of the exploding wd which are thought to be the progenitors of sne ia . in particular , we study the effects of progenitors on the brightness decline ...
astro-ph0104257
c
using a delayed detonation model and realistic structures for the exploding white dwarf , we have studied the influence of the progenitor star on the light curves and spectral properties of type ia supernovae . * stellar models : * we considered stars between 1.5 to 7 @xmath2 and metallicities between @xmath91 ( solar ...
our study is based on the delayed detonation scenario with specific parameters which give a good account of typical light curves and spectra . a change in the central density of the exploding wd has similar effects but produces the opposite dependency between the brightness to tail ratio and and , therefore , can be se...
detailed stellar evolution calculations have been performed to quantify the influence of the main sequence mass and the metallicity z of the progenitor on the structure of the exploding wd which are thought to be the progenitors of sne ia . in particular , we study the effects of progenitors on the brightness decline ...
cond-mat0412123
i
the casimir force @xcite between uncharged metallic plates attracts considerable attention as a macroscopic manifestation of the quantum vacuum @xcite . with the development of microtechnologies that routinely allow control of the separation between bodies smaller than 1 @xmath0 the force became a subject of systematic...
it is argued that the precise values of the drude parameters are crucial for accurate evaluation of the force . the dielectric function of perfect single crystalline gold is discussed . it is used to establish the upper limit on the absolute value of the force . it is demonstrated that the force between films is smalle...
difference between bulk material and deposited film is shown to have an appreciable influence on the casimir force . analysis of the optical data on gold films unambiguously demonstrates the sample dependence : the dielectric functions of the films deposited in different conditions are different on the level that can n...
1310.2926
i
distance covariance ( dcov ) and distance correlation characterize multivariate independence for random vectors in arbitrary , not necessarily equal dimension . in this work we focus on the open problem of _ partial distance correlation_. our intermediate results include methods for applying distance correlation to dis...
distance covariance and distance correlation are scalar coefficients that characterize independence of random vectors in arbitrary dimension . properties , extensions , and applications of distance correlation have been discussed in the recent literature , but the problem of defining the partial distance correlation ha...
distance covariance and distance correlation are scalar coefficients that characterize independence of random vectors in arbitrary dimension . properties , extensions , and applications of distance correlation have been discussed in the recent literature , but the problem of defining the partial distance correlation ha...
1103.3268
i
directly extending our previous publication ( ymm09 ) , we continue to study massless particles moving under the gravitational influence of density fluctuations due to saturated magneto - rotational turbulence in a local , isothermal , keplerian gas disk . we include linearized vertical gravity from the host star and t...
due to the gravitational influence of density fluctuations driven by magneto - rotational instability in the gas disk , planetesimals and protoplanets undergo diffusive radial migration as well as changes in other orbital properties . this correlation indicates that caution should be exercised when interpreting local -...
due to the gravitational influence of density fluctuations driven by magneto - rotational instability in the gas disk , planetesimals and protoplanets undergo diffusive radial migration as well as changes in other orbital properties . the magnitude of the effect on particle orbits can have important consequences for pl...
1309.0526
i
the chemical abundance of galaxies is an integrated information on the sequential process of star formation , stellar death , and ejection of heavy elements lasting over a galactic age under an individual specific galaxy environment . therefore , an unusual observed chemical feature detected in some galaxies , that is ...
dwarf irregular galaxies ( dirrs ) including the magellanic clouds in the local universe , in many cases , exhibit an unusually low n / o abundance ratio ( this ratio is broadly equivalent to the average level of extremely metal - poor stars in the galactic halo , suggesting that n released from asymptotic giant branch...
dwarf irregular galaxies ( dirrs ) including the magellanic clouds in the local universe , in many cases , exhibit an unusually low n / o abundance ratio ( n / o ) in h ii regions as compared with the solar value ( ) . this ratio is broadly equivalent to the average level of extremely metal - poor stars in the galactic...
1309.0526
c
our theoretical scheme is constructed under a hypothesis that preferential loss of massive agb ejecta together with those of prompt sne ia occurs in dirrs . this view is favoured by hydrodynamical simulations in the starburst model @xcite . in this model , sne ii explode in dense ism where most of energy from sne ii is...
accordingly , we propose that the ejecta of massive agb stars that correspond to a major production site of n can be stripped from dirrs that have undergone a strong interaction with a luminous galaxy . the physical process of its stripping is made up of two stages : ( i ) the ejecta of massive agb stars in a dirr are ...
dwarf irregular galaxies ( dirrs ) including the magellanic clouds in the local universe , in many cases , exhibit an unusually low n / o abundance ratio ( n / o ) in h ii regions as compared with the solar value ( ) . this ratio is broadly equivalent to the average level of extremely metal - poor stars in the galactic...
astro-ph0511284
i
the cumulative stellar mass loss from the stars in an early - type galaxy is typically 0.1 - 3 m@xmath6 yr@xmath7 ( e.g. , @xcite ) , which , integrated over a hubble time , is comparable to the gaseous mass of a spiral galaxy . the absence of a massive disk of cool atomic and molecular gas in early - type galaxies ind...
early - type galaxies often contain a hot x - ray emitting interstellar medium ( 3 - 8 k ) with an apparent radiative cooling time much less than a hubble time . we report on a study of an unbiased sample of 24 galaxies , obtaining _ far ultraviolet spectroscopic explorer _ there is a correlation between and , although...
early - type galaxies often contain a hot x - ray emitting interstellar medium ( 3 - 8 k ) with an apparent radiative cooling time much less than a hubble time . if unopposed by a heating mechanism , the gas will radiatively cool to temperatures 10 k at a rate proportional to/ , typically 0.03 - 1 m yr . we can test if...
cond-mat9806107
i
understanding of the physical origins and systematics underlying the variations of materials properties with size , form of aggregation , and dimensionality are some of the main challenges in modern materials research , of ever increasing importance in the face of the accelerated trend toward miniaturization of electro...
b * 101 * , 5780 ( 1997 ) ] to wires containing a variable - shaped constricted region . these subbands are the analogs of shells in finite - size , zero - dimensional fermionic systems , such as metal clusters , atomic nuclei , andhe clusters , where magic numbers are known to occur . these variations in the energy re...
energetics and quantized conductance in jellium - modeled nanowires are investigated using the local - density - functional - based shell correction method , extending our previous study of uniform - in - shape wires [ c. yannouleas and u. landman , j. phys . chem . b * 101 * , 5780 ( 1997 ) ] to wires containing a var...
cond-mat9806107
c
in this paper , we extended our investigations @xcite of energetics , conductance , and mesoscopic forces in a jellium modelled nanowire ( sodium ) using the local - density - functional - based shell correction method to variable - shaped wires , i.e. , containing a constricted region modeled here by a parabolic depen...
energetics and quantized conductance in jellium - modeled nanowires are investigated using the local - density - functional - based shell correction method , extending our previous study of uniform - in - shape wires [ c. yannouleas and u. landman , j. phys . the energetics of the wire ( sodium ) as a function of the l...
energetics and quantized conductance in jellium - modeled nanowires are investigated using the local - density - functional - based shell correction method , extending our previous study of uniform - in - shape wires [ c. yannouleas and u. landman , j. phys . chem . b * 101 * , 5780 ( 1997 ) ] to wires containing a var...
0803.0295
i
the optical and near - infrared spectral energy distributions of very low mass stars and brown dwarfs late - type m , l and t dwarfs are distinctly non - blackbody . overlapping molecular bands and strong line emission produce a rich array of spectral diagnostics for classification and characterization of physical pr...
evidence is presented that 2mass j03202839 , a late - type dwarf with discrepant optical ( m8 : ) and near - infrared ( l1 ) spectral types , is an as - yet unresolved stellar / brown dwarf binary with late - type m dwarf and t dwarf components . this conclusion is based on low - resolution , near - infrared spectrosc...
evidence is presented that 2mass j03202839 , a late - type dwarf with discrepant optical ( m8 : ) and near - infrared ( l1 ) spectral types , is an as - yet unresolved stellar / brown dwarf binary with late - type m dwarf and t dwarf components . this conclusion is based on low - resolution , near - infrared spectrosc...
0803.0295
c
we have found that subtle peculiarities observed in the near - infrared spectrum of 2mass j0320@xmath00446 , in particular a characteristic bowl - shaped dip at 1.6 @xmath1 , indicate the presence of a mid - type t dwarf companion . this companion is unresolved in lgs ao imaging observations ( including the first app...
the feature , which is also present in the combined light spectrum of the m8.5 + t6 binary scr 1845 , arises from the combination of feh absorption from an m8.5 primary and pseudo - continuum flux from a t5 secondary , as ascertained from binary spectral templates constructed from empirical data . the binary templates ...
evidence is presented that 2mass j03202839 , a late - type dwarf with discrepant optical ( m8 : ) and near - infrared ( l1 ) spectral types , is an as - yet unresolved stellar / brown dwarf binary with late - type m dwarf and t dwarf components . this conclusion is based on low - resolution , near - infrared spectrosc...
1701.04490
r
we implement all algorithms and perform all calculations using the open - source plane - wave density - functional theory software , jdftx.@xcite all calculations in this work employ the pbe@xcite exchange - correlation functional with gbrv ultrasoft pseudopotentials@xcite at a kinetic energy cutoff of 20 hartrees for...
both methods substantially improve performance compared to a sequence of conventional fixed - number calculations targeting the desired potential , with the gc - auxh method additionally exhibiting reliable and smooth exponential convergence of the grand free energy . enables theoretical elucidation of reaction mechani...
first - principles calculations combining density - functional theory and continuum solvation models enable realistic theoretical modeling and design of electrochemical systems . when a reaction proceeds in such systems , the number of electrons in the portion of the system treated quantum mechanically changes continuo...
1701.04490
c
this work introduces algorithms for directly converging dft calculations in the grand - canonical ensemble of electrons , where the number of electrons adjusts to maintain the system at constant electron chemical potential , while ionic response in a continuum solvation model of electrolyte keeps the system neutral . w...
when a reaction proceeds in such systems , the number of electrons in the portion of the system treated quantum mechanically changes continuously , with a balancing charge appearing in the continuum electrolyte . a grand - canonical ensemble of electrons at a chemical potential set by the electrode potential is therefo...
first - principles calculations combining density - functional theory and continuum solvation models enable realistic theoretical modeling and design of electrochemical systems . when a reaction proceeds in such systems , the number of electrons in the portion of the system treated quantum mechanically changes continuo...
1606.09532
i
let @xmath6 be an odd prime , and @xmath5 be an algebraically closed field of characteristic @xmath6 . for @xmath7 an integer , we consider the symplectic group @xmath4 , thought of as an algebraic group of rank @xmath8 . it is well - known that the classification ( due to chevalley ) of rational simple @xmath4-modules...
for a prime , and an integer , we use topological quantum field theory ( tqft ) to study a family of highest weight modules for the symplectic group where is an algebraically closed field of characteristic . this permits explicit formulae for the dimension and the formal character of for these highest weights .
for a prime , and an integer , we use topological quantum field theory ( tqft ) to study a family of highest weight modules for the symplectic group where is an algebraically closed field of characteristic . this permits explicit formulae for the dimension and the formal character of for these highest weights .
1211.5426
i
the famous lacunary fourier series @xmath13 was proposed by riemann in the 1850 s as an example of continuous but nowhere differentiable function . since then , this series has drawn much attention from many mathematicians ( amongst them , hardy and littlewood ) , and its complete local study was finally achieved by ge...
for any $ ] , the series converges almost everywhere on $ ] by a result of hardy - littlewood concerning the growth of the sums , but not everywhere . however , there does not yet exist an intrinsic description of the set of convergence for . in this paper , we define in terms of even continued fractions a subset of po...
for any $ ] , the series converges almost everywhere on $ ] by a result of hardy - littlewood concerning the growth of the sums , but not everywhere . however , there does not yet exist an intrinsic description of the set of convergence for . in this paper , we define in terms of even continued fractions a subset of po...
0802.1352
i
stable commutator length is a numerical invariant of elements in the commutator subgroup of a group . it is intimately related to ( two - dimensional ) bounded cohomology , and appears in many areas of low - dimensional topology and dynamics , from the milnor - wood inequality , to the @xmath2 conjecture . however , al...
for any group , there is a natural ( pseudo-)norm on the vector space of real homogenized ( group )-boundaries , called the _ stable commutator length _ norm . this norm is closely related to , and can be thought of as a relative version of , the gromov ( pseudo)-norm on ( ordinary ) homology . we show that for a free ...
for any group , there is a natural ( pseudo-)norm on the vector space of real homogenized ( group )-boundaries , called the _ stable commutator length _ norm . this norm is closely related to , and can be thought of as a relative version of , the gromov ( pseudo)-norm on ( ordinary ) homology . we show that for a free ...
0909.0286
i
particle - based numerical methods are routinely used in plasma physics calculations @xcite . in many cases these methods are more efficient and simpler to implement than the corresponding continuum eulerian methods . however , particle methods face the well known statistical sampling limitation of attempting to simula...
the method , known as wavelet based density estimation ( wbde ) , was previously introduced in the statistical literature to estimate probability densities given a finite number of independent measurements . the method is compared with a recently proposed proper orthogonal decomposition based method , and it is tested ...
for given computational resources , the accuracy of plasma simulations using particles is mainly held back by the noise due to limited statistical sampling in the reconstruction of the particle distribution function . a method based on wavelet analysis is proposed and tested to reduce this noise . the method , known as...
0909.0286
m
this section presents the wavelet - based density estimation ( wbde ) algorithm . we start by reviewing basic ideas on kernel density estimation ( kde ) which is closely related to the use of finite size particles ( fsp ) in pic simulations . following this , we we give a brief introduction to wavelet analysis and disc...
its novel application to plasma simulations can be viewed as a natural extension of the finite size particles ( fsp ) approach , with the advantage of estimating more accurately distribution functions that have localized sharp features . most importantly , the computational cost of the denoising stage is of the same or...
for given computational resources , the accuracy of plasma simulations using particles is mainly held back by the noise due to limited statistical sampling in the reconstruction of the particle distribution function . a method based on wavelet analysis is proposed and tested to reduce this noise . the method , known as...
0909.0286
i
wavelet based density estimation was investigated as a post - processing tool to reduce the noise in the reconstruction of particle distribution functions starting from discrete particle data . this is a problem of direct relevance to particle - based transport calculations in plasma physics and related fields . in par...
the proposed method preserves the moments of the particle distribution function to a good level of accuracy , has no constraints on the dimensionality of the system , does not require an a priori selection of a global smoothing scale , and its able to adapt locally to the smoothness of the density based on the given di...
for given computational resources , the accuracy of plasma simulations using particles is mainly held back by the noise due to limited statistical sampling in the reconstruction of the particle distribution function . a method based on wavelet analysis is proposed and tested to reduce this noise . the method , known as...
1602.07406
c
this work has presented a theoretical framework of stochastic weak passivity serving for stabilizing the stochastic differential systems with nonvanishing noise . the main contributions include : i ) deriving the necessary conditions to say a stochastic system stochastically passive or the sufficient conditions that a ...
the stochastic asymptotic weak stability is proposed in this paper which suggests the transition measure of the state to be convergent and the ergodicity . by defining stochastic weak passivity that admits stochastic passivity only outside a ball centered around the desired state but not in the whole state space , we d...
for stochastic systems with nonvanishing noise , i.e. , at the desired state the noise port does not vanish , it is impossible to achieve the global stability of the desired state in the sense of probability . this bad property also leads to the loss of stochastic passivity at the desired state if a radially unbounded ...
1302.4692
i
let @xmath0 be a closed ( i.e. compact , without boundary ) manifold of dimension two , different from the 2-sphere , equipped with an orientation 2-form @xmath3 . if @xmath4 and @xmath5 are two @xmath6 closed curves on @xmath0 which intersect transversally , we call algebraic intersection of @xmath7 and @xmath5 the nu...
given a closed , oriented surface , the algebraic intersection of closed curves induces a symplectic form on the first homology group of . if is equipped with a riemannian metric , the first homology group of inherits a norm , called the stable norm . we study the norm of the bilinear form , with respect to the stable ...
given a closed , oriented surface , the algebraic intersection of closed curves induces a symplectic form on the first homology group of . if is equipped with a riemannian metric , the first homology group of inherits a norm , called the stable norm . we study the norm of the bilinear form , with respect to the stable ...
1303.5180
i
in this note we study the problem concerning the optimality of the aew in the regression model with random design . to formulate the problem , we need to introduce several definitions . let @xmath7 and @xmath8 be two measure spaces , and set @xmath9 and @xmath10 to be @xmath11 i.i.d . random variables with values in @x...
given a finite class of functions , the problem of aggregation is to construct a procedure with a risk as close as possible to the risk of the best element in the class . a classical procedure ( pac - bayesian statistical learning theory ( 2004 ) paris 6 , _ statistical learning theory and stochastic optimization _ ( 2...
given a finite class of functions , the problem of aggregation is to construct a procedure with a risk as close as possible to the risk of the best element in the class . a classical procedure ( pac - bayesian statistical learning theory ( 2004 ) paris 6 , _ statistical learning theory and stochastic optimization _ ( 2...
math0010271
i
in this work we continue the investigation begun in @xcite of the spectral relationships within an @xmath0-tuple of self adjoint operators in a finite von neumann algebra as reflected in the geometry of the corresponding spectral scale . let us begin by introducing some notation and reviewing some of the results in @x...
given an-tuple of self - adjoint operators in a finite von neumann algebra and a faithful , normal tracial state on , we define a map from to by . the image of the positive part of the unit ball under is called the * spectral scale * of relative to and is denoted by . in a previous paper with nik weaver we showed that ...
given an-tuple of self - adjoint operators in a finite von neumann algebra and a faithful , normal tracial state on , we define a map from to by . the image of the positive part of the unit ball under is called the * spectral scale * of relative to and is denoted by . in a previous paper with nik weaver we showed that ...
astro-ph9901242
i
in this work , we have addressed two essential features of the x - ray temperatures derived by davis & white ( 1996 ) for an optically complete sample of elliptical galaxies : ( 1 ) the x - ray emitting gas is always hotter than the stars and , typically , twice as hot ( @xmath298 ) ; ( 2 ) the gas / stellar temperatur...
given the recently deduced relationship between x - ray temperatures and stellar velocity dispersions ( the `` relation '' ) in an optically complete sample of elliptical galaxies ( ) , we demonstrate that ellipticals contain substantial amounts of dark matter _ in general_. we present constraints on the dark matter sc...
given the recently deduced relationship between x - ray temperatures and stellar velocity dispersions ( the `` relation '' ) in an optically complete sample of elliptical galaxies ( ) , we demonstrate that ellipticals contain substantial amounts of dark matter _ in general_. we present constraints on the dark matter sc...
1101.5641
i
graph pebbling is like a number of network models , including network flow , transportation , and supply chain , in that one must move some commodity from a set of sources to a set of sinks optimally according to certain constraints . network flow constraints restrict flow along edges and conserve flow through vertices...
graph pebbling is a network model for studying whether or not a given supply of discrete pebbles can satisfy a given demand via pebbling moves . a pebbling move across an edge of a graph takes two pebbles from one endpoint and places one pebble at the other endpoint ; the other pebble is lost in transit as a toll . it ...
graph pebbling is a network model for studying whether or not a given supply of discrete pebbles can satisfy a given demand via pebbling moves . a pebbling move across an edge of a graph takes two pebbles from one endpoint and places one pebble at the other endpoint ; the other pebble is lost in transit as a toll . it ...
1310.2871
i
it has long been understood that , in general relativity gravitational phenomena are the physical manifestation of spacetime curvature . nevertheless , gravitational wave detectors , which make physical measurements , are typically described as responding to spacetime metric perturbations , which are coordinate gauge d...
gravitational wave detectors are typically described as responding to gravitational wave metric perturbations , which are gauge - dependent and correspondingly unphysical quantities . the description of gravitational waves , and a gravitational wave detector s response , to the unphysical metric perturbation has lead...
gravitational wave detectors are typically described as responding to gravitational wave metric perturbations , which are gauge - dependent and correspondingly unphysical quantities . this is particularly true for ground - based interferometric detectors , like ligo , space - based detectors , like lisa and its deriv...
1310.2871
c
most modern gravitational wave detectors including laser interferometers , pulsar timing arrays , spacecraft doppler tracking rely upon the waves effect on light travel time to detect the wave s presence . the response of these detectors is conventionally expressed in terms of a metric perturbation description of the...
this is particularly true for ground - based interferometric detectors , like ligo , space - based detectors , like lisa and its derivatives , spacecraft doppler tracking detectors , and pulsar timing arrays detectors . the description presented here provides an unambiguous physical description of what a gravitational ...
gravitational wave detectors are typically described as responding to gravitational wave metric perturbations , which are gauge - dependent and correspondingly unphysical quantities . this is particularly true for ground - based interferometric detectors , like ligo , space - based detectors , like lisa and its deriv...
1205.1486
c
the simulations of sec . [ sec_results ] demonstrate that two dominant factors control the characteristic stress scale of the stress - strain curve . these are the choice of @xmath11 and the mobile dislocation density . figs . [ different_tau_fig ] and [ different_rho_fig ] demonstrate that @xmath11 sets an upper str...
here we present a model to study the micro - plastic regime of a stress - strain curve . in this model these model parameters , along with the mobile dislocation density , are found to admit a diversity of micro - plastic behaviour involving intermittent plasticity in the form of a scale - free avalanche phenomenon , w...
here we present a model to study the micro - plastic regime of a stress - strain curve . in this model an explicit dislocation population represents the mobile dislocation content and an internal shear - stress field represents a mean - field description of the immobile dislocation content . the mobile dislocations are...
1205.1486
c
a simplified two dimensional dislocation modelling framework has been introduced in which the explicit interacting dislocation population , constrained to a simple dipolar mat geometry , represents only the mobile dislocation density component of the total dislocation density , and the much larger immobile dislocation ...
an explicit dislocation population represents the mobile dislocation content and an internal shear - stress field represents a mean - field description of the immobile dislocation content . the mobile dislocations are constrained to a simple dipolar mat geometry and modelled via a dislocation dynamics algorithm , whils...
here we present a model to study the micro - plastic regime of a stress - strain curve . in this model an explicit dislocation population represents the mobile dislocation content and an internal shear - stress field represents a mean - field description of the immobile dislocation content . the mobile dislocations are...
1510.03697
c
in this paper , we have recognized a supersymmetry in the structure of hamiltonians that energetically impose local constraints on their ground states . this allowed us to formally connect recent development in the theory of phonons to a wider range of systems including frustrated and unfrustrated magnets . the connect...
it is natural to wonder if this striking effect is more general and they conclude their study with `` finally , it will be interesting to explore connections with theories of frustrated magnetism . '' this paper s goal is to make this connection and use it to generalize kl theory beyond phonons .
i generalize the theory of phonon topological band structures of isostatic lattices to frustrated antiferromagnets . i achieve this with a discovery of a many - body supersymmetry ( susy ) in the phonon problem of balls and springs and its connection to local constraints satisfied by ground states . the witten index of...
astro-ph0007328
i
i investigated the use of pearson s chi - square statistic [ eq . ( [ eq : x2p ] ) ] , the maximum likelihood ratio statistic for poisson distributions [ eq . ( [ eq : x2l ] ) ] , and the chi - square - gamma statistic [ eq . ( [ eq : x2 g ] ) ] for the determination of the goodness - of - fit between theoretical mod...
i investigate the use of pearson s chi - square statistic , the maximum likelihood ratio statistic for poisson distributions , and the chi - square - gamma statistic ( mighell 1999 , apj , 518 , 380 ) for the determination of the goodness - of - fit between theoretical models and low - count poisson - distributed data ...
i investigate the use of pearson s chi - square statistic , the maximum likelihood ratio statistic for poisson distributions , and the chi - square - gamma statistic ( mighell 1999 , apj , 518 , 380 ) for the determination of the goodness - of - fit between theoretical models and low - count poisson - distributed data ...
0802.1113
i
in 1998 , blaze , bleumer and strauss @xcite proposed a cryptographic primitive where a semi - trusted proxy is given some information that allows turning s signature on a message into bob s signature on the same message . these _ proxy re - signatures _ ( prs ) not to be confused with proxy signatures @xcite require...
in 1998 , blaze , bleumer , and strauss suggested a cryptographic primitive named _ proxy re - signatures _ where a proxy turns a signature computed under alice s secret key into one from bob on the same message . the semi - trusted proxy does not learn either party s signing key and can not sign arbitrary messages on ...
in 1998 , blaze , bleumer , and strauss suggested a cryptographic primitive named _ proxy re - signatures _ where a proxy turns a signature computed under alice s secret key into one from bob on the same message . the semi - trusted proxy does not learn either party s signing key and can not sign arbitrary messages on ...
cond-mat0302503
i
the presence in a solid of randomly - distributed imperfections causes its electrons to propagate diffusively rather than ballistically . as a result , when two electrons interact , they tarry in each other s vicinity , and become more strongly correlated @xcite . as shown by finkelstein @xcite and castellani , _ et al...
in a dirty metal , electron - electron interactions in the spin - triplet channel lead to singular corrections to a variety of physical quantities . we show that these singularities herald the emergence of ferromagnetism . we calculate the effective action for the magnetic moment of weakly - interacting electrons in a ...
in a dirty metal , electron - electron interactions in the spin - triplet channel lead to singular corrections to a variety of physical quantities . we show that these singularities herald the emergence of ferromagnetism . we calculate the effective action for the magnetic moment of weakly - interacting electrons in a ...
0803.0720
i
throughout @xmath0 is a field . in @xcite iyama and yoshino consider the following two settings . [ ref-1.1 - 0 ] let @xmath1 $ ] and let @xmath2 be the cyclic group of three elements . consider the action of @xmath3 on @xmath4 via @xmath5 where @xmath6 , @xmath7 . put @xmath8 . [ ref-1.2 - 1 ] let @xmath9 $ ] and let ...
in a recent paper iyama and yoshino consider two interesting examples of isolated singularities over which it is possible to classify the indecomposable maximal cohen - macaulay modules in terms of linear algebra data . in this paper we present two new approaches to these examples . in the first approach we give a rela...
in a recent paper iyama and yoshino consider two interesting examples of isolated singularities over which it is possible to classify the indecomposable maximal cohen - macaulay modules in terms of linear algebra data . in this paper we present two new approaches to these examples . in the first approach we give a rela...
1209.3994
i
in the yang - mills theory @xcite and quantum chromodynamics ( qcd ) for strong interactions , both the renormalizability and the physical unitarity are satisfied , as demonstrated first in @xcite . moreover , it is also known that the massive yang - mills theory satisfies both the renormalizability and the physical un...
in a series of papers , we examine the physical unitarity in a massive yang - mills theory without the higgs field in which the color gauge symmetry is not spontaneously broken and kept intact . for this purpose , we use a new framework proposed in the previous paper kondo [ arxiv:1208.3521 ] based on a nonperturbative...
in a series of papers , we examine the physical unitarity in a massive yang - mills theory without the higgs field in which the color gauge symmetry is not spontaneously broken and kept intact . for this purpose , we use a new framework proposed in the previous paper kondo [ arxiv:1208.3521 ] based on a nonperturbative...
astro-ph0409605
c
a significant hindrance to a wider acceptance of the primordial scenarios for gc origin is an apparent absence of dm in galactic gcs . many observational facts have been suggested to be evidence for gcs having no dm , including the presence of such features in the outer parts of the gc density profiles as apparent tida...
we study the initial relaxation of a stellar core inside a live dark matter minihalo in the early universe . our dark - matter dominated globular clusters show features which are usually attributed to the action of the tidal field of the host galaxy . among them are the presence of an apparent cutoff ( `` tidal radius ...
in a series of two papers , we test the primordial scenario of globular cluster formation using results of high - resolutions-body simulations . in this first paper we study the initial relaxation of a stellar core inside a live dark matter minihalo in the early universe . our dark - matter dominated globular clusters ...
1504.02799
i
at the conclusion of an all - pay auction , all bidders must pay the bids they submitted , with only the highest bidder receiving the item . with this idea in mind , one can play a variant of a two - player game using an all - pay auction to decide who moves next instead of simply alternating between players . for exam...
in an all - pay auction , only one bidder wins but all bidders must pay the auctioneer . all - pay bidding games arise from attaching a similar bidding structure to traditional combinatorial games to determine which player moves next . in contrast to the established theory of single - pay bidding games , optimal play i...
in an all - pay auction , only one bidder wins but all bidders must pay the auctioneer . all - pay bidding games arise from attaching a similar bidding structure to traditional combinatorial games to determine which player moves next . in contrast to the established theory of single - pay bidding games , optimal play i...
1212.6318
c
the c and o abundances of main - sequence stars in the hyades cluster are not yet well established despite their astrophysical importance , for which a number of previous studies reported different results . also , the abundances of li ( key element for investigating the physical process in the envelope ) and fe ( repr...
in an attempt to carry out a systematic study on the behavior of the photospheric abundances of li , c , and o ( along with fe ) for hyades main - sequence stars in the range of 50007000 k , we conducted an extensive spectrum - synthesis analysis applied to four spectral regions ( comprising lines of fe - group eleme...
in an attempt to carry out a systematic study on the behavior of the photospheric abundances of li , c , and o ( along with fe ) for hyades main - sequence stars in the range of 50007000 k , we conducted an extensive spectrum - synthesis analysis applied to four spectral regions ( comprising lines of fe - group eleme...
cond-mat0204264
i
recently , many studies have been devoted to fractal structures induced by the chaotic dynamics in the phase - space of non - equilibrium statistical systems and , in particular , to the fractal character of the hydrodynamic modes governing the exponential relaxation of the system to the thermodynamic equilibrium @xcit...
in chaotic reaction - diffusion systems with two degrees of freedom , the modes governing the exponential relaxation to the thermodynamic equilibrium present a fractal structure which can be characterized by a hausdorff dimension . for long wavelength modes , this dimension is related to the lyapunov exponent and to a ...
in chaotic reaction - diffusion systems with two degrees of freedom , the modes governing the exponential relaxation to the thermodynamic equilibrium present a fractal structure which can be characterized by a hausdorff dimension . for long wavelength modes , this dimension is related to the lyapunov exponent and to a ...
1008.3567
i
there is growing interest in systems composed of individual monomers that interact via resonant dipole - dipole interaction . upon electronic excitation this transition dipole - dipole interaction between the monomers is responsible for a collective behaviour of these systems . besides the classical examples like van -...
in many molecular systems one encounters the situation where electronic excitations couple to a quasi - continuum of phonon modes . that continuum may be highly structured e.g. due to some weakly damped high frequency modes . to handle such a situation , an approach combining the non - markovian quantum state diffusio...
in many molecular systems one encounters the situation where electronic excitations couple to a quasi - continuum of phonon modes . that continuum may be highly structured e.g. due to some weakly damped high frequency modes . to handle such a situation , an approach combining the non - markovian quantum state diffusio...
1505.04256
i
radio relics are diffuse radio sources found in the outskirts of galaxy clusters and they are thought to trace synchrotron - emitting cosmic - ray ( cr ) electrons accelerated via diffusive shock acceleration ( dsa ) at cluster shocks ( e.g. * ? ? ? * ; * ? ? ? * ; * ? ? ? * ; * ? ? ? so far several dozens of clusters ...
in order to understand certain observed features of arc - like giant radio relics such as the rareness , uniform surface brightness , and curved integrated spectra , we explore a diffusive shock acceleration ( dsa ) model for radio relics in which a spherical shock impinges on a magnetized cloud containing fossil relat...
in order to understand certain observed features of arc - like giant radio relics such as the rareness , uniform surface brightness , and curved integrated spectra , we explore a diffusive shock acceleration ( dsa ) model for radio relics in which a spherical shock impinges on a magnetized cloud containing fossil relat...
1505.04256
i
we propose a model that may explain some characteristics of giant radio relics : the relative rareness , uniform surface brightness along the length of thin arc - like radio structure , and spectral curvature in the integrated radio spectrum over @xmath336 ghz . in the model , a spherical shock encounters an elongated ...
we perform dsa simulations of spherical shocks with the parameters relevant for the sausage radio relic in cluster ciza j2242.8 + 5301 , and calculate the ensuing radio synchrotron emission from re - accelerated electrons . three types of fossil electron populations are considered : a delta - function like population w...
in order to understand certain observed features of arc - like giant radio relics such as the rareness , uniform surface brightness , and curved integrated spectra , we explore a diffusive shock acceleration ( dsa ) model for radio relics in which a spherical shock impinges on a magnetized cloud containing fossil relat...
cond-mat0207571
i
since the discovery of the high - temperature superconductors in 1986 , there has been intense study of a number of two - dimensional models that are believed to model the electronic properties of the cuo@xmath2 plane of the cuprate superconductors , for example , the hubbard model , the @xmath3 model , and the heisenb...
this is the simplest model of correlated electrons and is more tractable for exact diagonalization than the hubbard model . we study systematically the dilute limit of this model by a combination of analytical and several numerical approaches : the two - particle problem using lattice green functions and the t - matrix...
in our model , spinless fermions ( or hardcore bosons ) on a square lattice hop to nearest neighbor sites , and also experience a hard - core repulsion at the nearest neighbor separation . this is the simplest model of correlated electrons and is more tractable for exact diagonalization than the hubbard model . we stud...
1407.7480
i
there are many problems in computational physics that involve solving partial differential equations ( pdes ) in complex geometries . examples include fluid flows in complicated systems , vein networks in plant leaves , and tumours in human bodies . standard solution methods for pdes in complex domains typically involv...
in recent work , li et al . ( comm . math . sci . , 7:81 - 107 , 2009 ) developed a diffuse - domain method ( ddm ) for solving partial differential equations in complex , dynamic geometries with dirichlet , neumann , and robin boundary conditions . the diffuse - domain method uses an implicit representation of the ...
in recent work , li et al . ( comm . math . sci . , 7:81 - 107 , 2009 ) developed a diffuse - domain method ( ddm ) for solving partial differential equations in complex , dynamic geometries with dirichlet , neumann , and robin boundary conditions . the diffuse - domain method uses an implicit representation of the ...
astro-ph0405146
i
the error boxes of unidentified gamma - ray sources are usually large , and thus the task of finding appropriate candidate counterparts at other wavelengths has not been easy . about 20 bright point - like gamma - ray sources were found near the galactic plane using cos - b ( swanenburg et al . 1981 ) some of which may...
we also report on reanalysis of archival rosat data . with _ chandra _ it became possible for the first time to measure the position of the putative gamma - ray counterpart rx j2020.2 + 4026 with sub - arcsec accuracy and to deduce its x - ray spectral characteristics . these observations demonstrate that rx j2020.2 +...
in search of the counterpart to the brightest unidentified gamma - ray source 3eg j2020 + 4017 ( 2cg078 + 2 ) we report on new x - ray and radio observations of the-cygni field with the _ chandra _ x - ray observatory and with the green bank telescope ( gbt ) . we also report on reanalysis of archival rosat data . with...
astro-ph0405146
c
we have searched a portion of the @xmath0-cygni field for possible x - ray counterparts to the intriguing gamma - ray source 3eg j2020 + 4017 ( 2cg078 + 2 ) using _ chandra _ and rosat . we have shown that a previous candidate , rx j2020.2 + 4026 , is almost certainly not the gamma - ray source but identified with a no...
in search of the counterpart to the brightest unidentified gamma - ray source 3eg j2020 + 4017 ( 2cg078 + 2 ) we report on new x - ray and radio observations of the-cygni field with the _ chandra _ x - ray observatory and with the green bank telescope ( gbt ) . observation detected 37 additional x - ray sources which w...
in search of the counterpart to the brightest unidentified gamma - ray source 3eg j2020 + 4017 ( 2cg078 + 2 ) we report on new x - ray and radio observations of the-cygni field with the _ chandra _ x - ray observatory and with the green bank telescope ( gbt ) . we also report on reanalysis of archival rosat data . with...
1205.2059
c
correlations between different parts of the genome are usually referred to as linkage disequilibrium , suggesting that due to genetic linkage , i.e. , a high probability of coinheritance , the allele frequencies at different loci are not independent . here , we have used a different measure to characterize correlations...
in sexual population , recombination reshuffles genetic variation and produces novel combinations of existing alleles , while selection amplifies the fittest genotypes in the population . if recombination is more rapid than selection , populations consist of a diverse mixture of many genotypes , as is observed in many ...
in sexual population , recombination reshuffles genetic variation and produces novel combinations of existing alleles , while selection amplifies the fittest genotypes in the population . if recombination is more rapid than selection , populations consist of a diverse mixture of many genotypes , as is observed in many ...