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1411.3054	c	we have described the theory of a previously unstudied form of the josephson interference effect that can occur in nanoscale @xmath0 junctions due to the coupling of the orbital angular momentum of transverse electronic subbands with an axial magnetic flux . we found in section [ sec : effect_of_length ] the regimes in...	numerical calculations of the critical current versus axial field reveal flux - aperiodic oscillations that we identify as a novel form of josephson interference due to this orbital subband effect . this behavior is studied as a function of junction length and chemical potential . finally , we discuss extensions to the...	a semiconductor nanowire based superconductor - normal - superconductor ( ) junction is modeled theoretically . a magnetic field is applied along the nanowire axis , parallel to the current . the bogoliubov - de gennes equations for andreev bound states are solved while considering the electronic subbands due to radial...
astro-ph9705057	i	when galaxies formed and how they evolved are among the central issues of cosmology today . the traditional clue to this problem has been provided by the number count of galaxies as a function of apparent magnitude . early observations in the blue band showed that the number of galaxies per unit angular area increases ...	a simple quantitative model is presented for the history of galaxies to explain galaxy number counts , redshift distributions and some other related observations . we first infer that irregular galaxies and the disks of spiral galaxies are young , probably formed at from a simultaneous consideration of colours and gas ...	a simple quantitative model is presented for the history of galaxies to explain galaxy number counts , redshift distributions and some other related observations . we first infer that irregular galaxies and the disks of spiral galaxies are young , probably formed at from a simultaneous consideration of colours and gas ...
0705.2707	i	since tubules were fabricated successfully from chiral lipid molecules , chiral lipid structures have attracted much experimental attention @xcite . most of chiral structures in experiments are self - assembled from dc@xmath3 which is a typical chiral molecule . et al . _ have observed that the spherical vesicles in so...	a theory of chiral lipid membranes is proposed on the basis of a concise free energy density which includes the contributions of the bending and the surface tension of membranes , as well as the chirality and orientational variation of tilting molecules . this theory is consistent with the previous experiments [ j.m . ...	a theory of chiral lipid membranes is proposed on the basis of a concise free energy density which includes the contributions of the bending and the surface tension of membranes , as well as the chirality and orientational variation of tilting molecules . this theory is consistent with the previous experiments [ j.m . ...
0705.2707	c	in this paper , we have focused on a concise free energy from which the euler - lagrange equations of clms without free edges and euler - lagrange equations as well as boundary conditions of clms with free edges can be derived analytically . their implications for extant and future experiments can be summarized as foll...	the pitch angles of helical ripples are theoretically estimated to be about 0 and 35 , which are close to the most frequent values 5 and 28 observed in the experiment [ n. mahajan _ the ratio between the width and pitch of twisted ribbons is predicted to be proportional to the relative concentration difference of left-...	a theory of chiral lipid membranes is proposed on the basis of a concise free energy density which includes the contributions of the bending and the surface tension of membranes , as well as the chirality and orientational variation of tilting molecules . this theory is consistent with the previous experiments [ j.m . ...
1303.0944	i	a possible approach for dealing with the intractability of a given decision or optimization problem is to identify restrictions on input instances under which the problem can still be solved efficiently . one generic framework for describing a kind of such restrictions in case of graph problems is the following : given...	a total dominating set in a graph is a set of vertices such that every vertex of the graph has a neighbor in the set . we introduce and study graphs that admit non - negative real weights associated to their vertices such that a set of vertices is a total dominating set if and only if the sum of the corresponding weigh...	a total dominating set in a graph is a set of vertices such that every vertex of the graph has a neighbor in the set . we introduce and study graphs that admit non - negative real weights associated to their vertices such that a set of vertices is a total dominating set if and only if the sum of the corresponding weigh...
1612.03355	i	no - slip billiard systems have received so far very little attention despite some interesting features that distinguish them from the much more widely studied standard billiards . these non - standard types of billiards are discrete time systems in dimension @xmath2 ( after taking the natural poincar section of a flow...	_ this leads to the study of _ no - slip billiards_planar billiard systems in which the moving particle is a disc ( with rotationally symmetric mass distribution ) whose translational and rotational velocities can both change at each collision with the boundary of the billiard domain . in this paper we greatly exten...	abstract rigid bodies collision maps in dimension two , under a natural set of physical requirements , can be classified into two types : the standard specular reflection map and a second which we call , after broomhead and gutkin , _ no - slip . _ this leads to the study of _ no - slip billiards_planar billiard sys...
0910.4172	i	a _ convex body _ is a compact convex set in @xmath3 with nonempty interior . let @xmath1 be a family of convex bodies . the _ packing number _ @xmath7 is the maximum cardinality of a set of pairwise - disjoint convex bodies in @xmath1 , and the _ transversal number _ @xmath0 is the minimum cardinality of a set of poin...	according to a classical result of grnbaum , the transversal number of any family of pairwise - intersecting translates or homothets of a convex body in is bounded by a function of . denote by ( resp . ) the supremum of the ratio of the transversal number to the packing number over all families of translates ( resp ....	according to a classical result of grnbaum , the transversal number of any family of pairwise - intersecting translates or homothets of a convex body in is bounded by a function of . denote by ( resp . ) the supremum of the ratio of the transversal number to the packing number over all families of translates ( resp ....
0910.3085	c	we have presented several methods to encode sets of finite vertices as single vertices . in the first part , we used depth - first spanning trees to encode edges by vertices . as an application we were able to extend courcelle s result on the collapse of @xmath1 to @xmath2 on sparse hypergraphs from countable hypergrap...	according to a theorem of courcelle monadic second - order logic and guarded second - order logic ( where one can also quantify over sets of edges ) have the same expressive power over the class of all countable-sparse hypergraphs . in the first part of the present paper we extend this result to hypergraphs of arbitrar...	according to a theorem of courcelle monadic second - order logic and guarded second - order logic ( where one can also quantify over sets of edges ) have the same expressive power over the class of all countable-sparse hypergraphs . in the first part of the present paper we extend this result to hypergraphs of arbitrar...
1508.05240	c	in this paper , we have presented new alma observations of the four brightest stars in the globular cluster 47 tucanae , examining the co @xmath97 transitions . no source was detected . having modelled the interaction between the isrf and the circumstellar enviroment , we expect that the co line fluxes from the giant s...	alma observations show a non - detection of carbon monoxide around the four most luminous asymptotic giant branch ( agb ) stars in the globular cluster 47 tucanae . we estimate that the co envelopes will be truncated at a few hundred stellar radii from their host stars and that the line intensities are about two orders...	alma observations show a non - detection of carbon monoxide around the four most luminous asymptotic giant branch ( agb ) stars in the globular cluster 47 tucanae . stellar evolution models and star counts show that the mass - loss rates from these stars should be.23.5 10 m yr . we would navely expect such stars to be ...
1302.0983	i	silicon is at the heart of all modern microelectronics . its properties have allowed the semiconductor industry to follow moore s law for nearly half a century , delivering nowadays billions of nanometre - scale transistors per chip . remarkably , silicon is also an ideal material to manipulate quantum information enco...	here we demonstrate that valley separation can be accurately tuned via electrostatic gate control in a metal - oxide - semiconductor quantum dot , providing splittings spanning 0.3 - 0.8 mev . the splitting varies linearly with applied electric field , with a ratio in agreement with atomistic tight - binding prediction...	although silicon is a promising material for quantum computation , the degeneracy of the conduction band minima ( valleys ) must be lifted with a splitting sufficient to ensure formation of well - defined and long - lived spin qubits . here we demonstrate that valley separation can be accurately tuned via electrostatic...
1610.04741	i	in a _ geometric drawing of a graph @xmath0 _ , the vertices of @xmath0 are represented by distinct points in the plane and each edge @xmath10 of @xmath0 is represented by the line segment between the pair of points that represent the vertices of @xmath10 . as usual , we identify the vertices and their images , as well...	an _ obstacle representation _ of a graph is a set of points in the plane representing the vertices of , together with a set of polygonal obstacles such that two vertices of are connected by an edge in if and only if the line segment between the corresponding points avoids all the obstacles . the _ obstacle number of ...	an _ obstacle representation _ of a graph is a set of points in the plane representing the vertices of , together with a set of polygonal obstacles such that two vertices of are connected by an edge in if and only if the line segment between the corresponding points avoids all the obstacles . the _ obstacle number of ...
1609.00094	i	a fundamental challenge in studying complex networked systems is to reveal the interplay between network topology and functionality@xcite . here we tackle this challenge by investigating a classical notion in graph theory , i.e. articulation points . a node in a network is an articulation point ( ap ) if its removal di...	an articulation point in a network is a node whose removal disconnects the network . those nodes play key roles in ensuring connectivity of many real - world networks , from infrastructure networks to protein interaction networks and terrorist communication networks . despite their fundamental importance , a general fr...	an articulation point in a network is a node whose removal disconnects the network . those nodes play key roles in ensuring connectivity of many real - world networks , from infrastructure networks to protein interaction networks and terrorist communication networks . despite their fundamental importance , a general fr...
1412.1958	i	it has long been known that general relativity and electrodynamics exhibit certain formal similarities , see matte @xcite and bel @xcite , or for a more recent overview costa and natrio @xcite . on the other hand , petrov type d spacetimes can be thought of as spacetimes with coulomb - like sources , as already point...	robinson 3-form , from which the bel we also determine the kummer tensor , a tensor cubic in curvature , for a general type d solution for the first time , and calculate the pieces of its irreducible decomposition . the calculations are carried out in two coordinate systems : in the original polynomial pd coordinat...	analogies between gravitation and electromagnetism have been known since the 1950s . here , we examine a fairly general type d solution the exact seven parameter solution of plebaski demiaski ( pd)to demonstrate these analogies for a physically meaningful spacetime : the two quadratic curvature invariants and are ...
1412.1958	c	in this paper , we have used the plebaski demiaski solution of general relativity to show that the formal analogy of invariants in general relativity and electrodynamics can be understood in a physical sense : the electric field @xmath202 ( charges ) corresponds to the mass parameter @xmath116 ( gravitational charge )...	analogies between gravitation and electromagnetism have been known since the 1950s . here , we examine a fairly general type d solution the exact seven parameter solution of plebaski demiaski ( pd)to demonstrate these analogies for a physically meaningful spacetime : the two quadratic curvature invariants and are ...	analogies between gravitation and electromagnetism have been known since the 1950s . here , we examine a fairly general type d solution the exact seven parameter solution of plebaski demiaski ( pd)to demonstrate these analogies for a physically meaningful spacetime : the two quadratic curvature invariants and are ...
1611.08349	i	we continue a study ( @xcite ; article i ) on the 26 december 2001 event ( sol2001 - 12 - 26 ) . this solar eruptive - flare event produced a strong flux of solar energetic particles ( seps , mainly protons ) near earth and a 63rd ground - level enhancement of cosmic - ray intensity ( gle63 ) . gles represent the high...	analysis of the observations of the sol2001 - 12 - 26 event related to ground - level - event gle63 , including microwave spectra and images from the _ nobeyama radioheliograph _ at 17 and 34ghz , _ siberian solar radio telescope _ at 5.7ghz , and _ transition region and coronal explorer _ in 1600 has led to the follo...	analysis of the observations of the sol2001 - 12 - 26 event related to ground - level - event gle63 , including microwave spectra and images from the _ nobeyama radioheliograph _ at 17 and 34ghz , _ siberian solar radio telescope _ at 5.7ghz , and _ transition region and coronal explorer _ in 1600 has led to the follo...
1611.08349	c	analysis of the microwave and uv images has shown that each of the two microwave sources observed at 5.7 , 17 , and 34ghz was associated with one of the two ribbons located in opposite - polarity magnetic fields . the appearance of each microwave source corresponds to the whole related ribbon , as if it had been viewed...	atypical were : i ) long duration of the flare of more than one hour ; ii ) moderate intensity of a microwave burst , aboutsfu ; iii ) low peak frequency of the gyrosynchrotron spectrum , around 6ghz ; and its insensitivity to the flux increase by more than one order of magnitude . comparison of the 17ghz and 1600 ...	analysis of the observations of the sol2001 - 12 - 26 event related to ground - level - event gle63 , including microwave spectra and images from the _ nobeyama radioheliograph _ at 17 and 34ghz , _ siberian solar radio telescope _ at 5.7ghz , and _ transition region and coronal explorer _ in 1600 has led to the follo...
1008.0554	i	there are more and more astrophysical observations justifying the existence of extremely compact massive objects with size close to their schwarzschild radius @xcite . it is widely accepted that these observations also provide indirect justifications of the existence of black holes ( bhs ) . nevertheless , there are al...	as a preparation for the dynamical investigations , this paper begins with a short review of the three - layer gravastar model with distinguished attention to the structure of the pertinent parameter space of gravastars in equilibrium . then the radial stability of these types of gravastars is studied by determining th...	as a preparation for the dynamical investigations , this paper begins with a short review of the three - layer gravastar model with distinguished attention to the structure of the pertinent parameter space of gravastars in equilibrium . then the radial stability of these types of gravastars is studied by determining th...
1008.0554	r	by inspection of the new effective potential the dynamics of the gravastar can be determined . if the new potential possesses the form of graph 2 of figure [ figure1 ] the motion of the gravastar surface remains bounded and we can determine the minimum and maximum value of the radius . in particular , the maximum mass ...	while in the analytic setup the equation of state is kept to be generic , in the numerical investigations three functionally distinct classes of equations of states are applied . in the corresponding particular cases the maximal mass of the dust shell that may fall onto a gravastar without converting it into a black ho...	as a preparation for the dynamical investigations , this paper begins with a short review of the three - layer gravastar model with distinguished attention to the structure of the pertinent parameter space of gravastars in equilibrium . then the radial stability of these types of gravastars is studied by determining th...
1103.4003	i	we start the introduction by considering the following views of great men : @xmath0``although nobody is in doubt today of the validity of the remarkable interpretation of thermodynamics with which statistical mechanics , following the efforts of boltzmann and gibbs , has recently provided us , it still remains extremel...	as the title says we want to answer the question ; how and why does statistical mechanics work ? as we know from the most used prescription of gibbs we calculate the phase space averages of dynamical quantities and we find that these phase averages agree very well with experiments . clearly actual experiments are not d...	as the title says we want to answer the question ; how and why does statistical mechanics work ? as we know from the most used prescription of gibbs we calculate the phase space averages of dynamical quantities and we find that these phase averages agree very well with experiments . clearly actual experiments are not d...
cond-mat0612361	i	most of the current experiments involving trapped atomic fermi gases focus on the bec - bcs crossover . by changing the magnetic field around a feshbach resonance , the scattering length @xmath0 of the atoms can be varied from small positive values through very large values near the resonance to small negative values ....	at finite temperature , the hydrodynamic collective modes of superfluid trapped fermi gases are coupled to the motion of the normal component , which in the bcs limit behaves like a collisionless normal fermi gas . the coupling between the superfluid and the normal components is treated in the framework of a semiclassi...	at finite temperature , the hydrodynamic collective modes of superfluid trapped fermi gases are coupled to the motion of the normal component , which in the bcs limit behaves like a collisionless normal fermi gas . the coupling between the superfluid and the normal components is treated in the framework of a semiclassi...
1312.6925	i	the scissors mode , which is a rotational mode of isovector character in deformed nuclei@xcite , is usually visualized by an out of phase orbital motion of protons against neutrons . this intuitive picture lead to the prediction of the scissors mode both in terms of nucleonic@xcite and bosonic@xcite degrees of freedom ...	background : : : the scissors mode is a rotational mode of isovector character in deformed nuclei . together with the isoscalar rotation , it is the prominent collective mode at low excitation energies . special emphasis is put on the coupling of the spin part of the m1 operator to the scissors mode . metho...	background : : : the scissors mode is a rotational mode of isovector character in deformed nuclei . together with the isoscalar rotation , it is the prominent collective mode at low excitation energies . purpose : : : we use a simple field theory model to investigate the role of the nucleon spin for the ...
hep-ph9604416	i	even though qcd yields a remarkably good description of the strong interaction , the low energy hadron physics has to be modelled phenomenologically . this is due to the fact that the usual perturbative approach in the coupling constant can not be applied to qcd below energies of the order of 1 gev . most of the phenom...	numerically , we find that this unitarization technique yields the correct complex analytic structure in terms of cuts and poles . indeed , using the chiral parameter estimates obtained from low energy experiments we obtain the poles associated with the and resonances . we have obtained the chiral parameters and scatte...	based on a dispersive approach , we apply the inverse amplitude method to unitarize one - loop and chiral perturbation theory . numerically , we find that this unitarization technique yields the correct complex analytic structure in terms of cuts and poles . indeed , using the chiral parameter estimates obtained from l...
hep-ph9604416	m	let us briefly review the standard derivation @xcite of the inverse amplitude method , since we will use it later in order to understand the applicability of the method . any partial wave obtained from a relativistic quantum field theory should present a characteristic analytic structure in the complex @xmath42 plane ....	based on a dispersive approach , we apply the inverse amplitude method to unitarize one - loop and chiral perturbation theory . pacs : 14.40.aq , 14.40.cs,11.80.et,13.75.lb 6.5 in 8.5 in epsf lbl-38645 ucm - ft 3/96 april 1996 revised nov96 to appear in : prd 1-sept-97 * the inverse amplitude me...	based on a dispersive approach , we apply the inverse amplitude method to unitarize one - loop and chiral perturbation theory . numerically , we find that this unitarization technique yields the correct complex analytic structure in terms of cuts and poles . indeed , using the chiral parameter estimates obtained from l...
cond-mat0211615	i	the pyrochlores with the chemical formula @xmath0mo@xmath1o@xmath2 ( @xmath3 being the divalent element ) exhibit a number of interesting and not completely understood phenomena,@xcite which present the main motivation for the analysis of electronic and magnetic structure of these compounds , which we undertake in this...	the coulomb repulsion plays a very important role in the problem , and the semi - empirical value- ev accounts simultaneously for the metal - insulator ( m - i ) transition , the ferromagnetic ( fm ) - spin - glass ( sg ) transition , and for the observed enhancement of the anomalous hall effect ( ahe ) . the m - i tra...	being motivated by recent experimental studies , we investigate magnetic structures of the mo pyrochloresmoo ( y , nd , and gd ) and their impact on the electronic properties . the latter are closely related with the behavior of twelve mo( ) bands , located near the fermi level and well separated from the rest of the s...
cond-mat0211615	i	we have presented results of model hf calculations for pyrochlores @xmath0mo@xmath1o@xmath2 ( @xmath3@xmath4 y , gd , and nd ) . the model combines details of lda electronic structure for the mo(@xmath5 ) bands located near the fermi level , the spin - orbit interaction , and the on - site coulomb interactions amongst ...	we use a mean - field hartree - fock approach , which combines fine details of the electronic structure for these bands , extracted from the conventional calculations in the local - density approximation , the spin - orbit interaction , and the on - site coulomb interactions amongst the mo( ) electrons , treated in the...	being motivated by recent experimental studies , we investigate magnetic structures of the mo pyrochloresmoo ( y , nd , and gd ) and their impact on the electronic properties . the latter are closely related with the behavior of twelve mo( ) bands , located near the fermi level and well separated from the rest of the s...
1005.1312	i	the principal results of this paper are as follows . assuming only a _ large scale _ anisotropic distribution of crs ( generated , for example by a nearby accelerator , such as a snr ) and a @xcite ( gs ) cascade of alfvenic turbulence originating from some scale @xmath1 , which is the longest scale relevant for the wa...	both the acceleration of cosmic rays ( cr ) in supernova remnant shocks and their subsequent propagation through the random magnetic field of the galaxy deem to result in an almost isotropic cr spectrum . the key assumption is that crs are scattered by a strongly anisotropic alfven wave spectrum formed by the turbulent...	both the acceleration of cosmic rays ( cr ) in supernova remnant shocks and their subsequent propagation through the random magnetic field of the galaxy deem to result in an almost isotropic cr spectrum . yet the milagro tev observatory discovered a sharp ( arrival anisotropy of cr nuclei . we suggest a mechanism for p...
gr-qc0002092	i	this article presents the calculation , using continuum and lattice methods , of boundary terms in 3-dimensional gravity . the gravity theory is presented in first order palatini form , this being a particular example of the general class of bf models @xcite as this is the most convenient presentation for deriving the ...	boundary actions for three - dimensional quantum gravity in the discretized formalism of ponzano - regge are studied with a view towards understanding the boundary degrees of freedom . these degrees of freedom postulated in the holography hypothesis are supposed to be characteristic of quantum gravity theories . in par...	boundary actions for three - dimensional quantum gravity in the discretized formalism of ponzano - regge are studied with a view towards understanding the boundary degrees of freedom . these degrees of freedom postulated in the holography hypothesis are supposed to be characteristic of quantum gravity theories . in par...
1211.5799	i	during last decades , the interest in diffusive processes has grown tremendously because of their universality in diverse physical areas ; ranging from condensed matter to elementary particle physics and gravitation @xcite . in particular , it has emerged an intense activity in the study of brownian motion in curved ma...	brownian motion of free particles on curved surfaces is studied by means of the langevin equation written in riemann normal coordinates . in the diffusive regime we find the same physical behavior as the one described by the diffusion equation on curved manifolds [ j. stat . our findings are corroborated by means of br...	brownian motion of free particles on curved surfaces is studied by means of the langevin equation written in riemann normal coordinates . in the diffusive regime we find the same physical behavior as the one described by the diffusion equation on curved manifolds [ j. stat . mech . ( 2010 ) p08006 ] . therefore , we us...
1403.7007	i	the demand for high - definition video streaming services such as youtube and netflix is driving the rapid growth of internet traffic . in order to mitigate the effect of this increased load on the underlying communication infrastructure , content delivery networks deploy storage memories or caches throughout the netwo...	caching of popular content during off - peak hours is a strategy to reduce network loads during peak hours . recent work has shown significant benefits of designing such caching strategies not only to deliver part of the content locally , but also to provide coded multicasting opportunities even among users with differ...	caching of popular content during off - peak hours is a strategy to reduce network loads during peak hours . recent work has shown significant benefits of designing such caching strategies not only to deliver part of the content locally , but also to provide coded multicasting opportunities even among users with differ...
1305.4685	i	this account of physics starts by considering _ configuration space _ @xmath1 , i.e. the space of all possible configurations @xmath2 that a physical system can take . in ordinary mechanics , the configurations are particle positions @xcite . in field theories they are the values taken by the field on a fixed spatial s...	i provide perturbative schemes for these in which the timefunction is to be determined rather than assumed . this paper is useful modelling as regards the halliwell hawking arena for the quantum origin of the inhomogeneous cosmological fluctuations . * edward anderson * pacs : 04.60kz , 04.20.cv . ea212@cam....	classical and semiclassical schemes are presented that are timeless at the primary level and recover time from mach s ` time is to be abstracted from change ' principle at the emergent secondary level . the semiclassical scheme is a machian variant of the semiclassical approach to the problem of time in quantum gravity...
1305.4685	c	classical and semiclassical schemes are presented that are timeless at the primary level and recover time from mach s ` time is to be abstracted form change ' principle at the emergent secondary level . this paper considers this for relational particle mechanics ( rpm ) model arenas . see @xcite for the minisuperspace ...	classical and semiclassical schemes are presented that are timeless at the primary level and recover time from mach s ` time is to be abstracted from change ' principle at the emergent secondary level . the semiclassical scheme is a machian variant of the semiclassical approach to the problem of time in quantum gravity...	classical and semiclassical schemes are presented that are timeless at the primary level and recover time from mach s ` time is to be abstracted from change ' principle at the emergent secondary level . the semiclassical scheme is a machian variant of the semiclassical approach to the problem of time in quantum gravity...
1702.08234	i	* the rise of cloud apps : * + the popularity of consumer cloud storage providers ( csps ) over the previous decade has been on a roll . dropbox , google drive , and one drive have each amassed hundreds of millions of users . in order to further appeal to their users , the csps have been transitioning from being pure _...	such apps often request full access to users files , including files shared with collaborators . hence , whenever a user grants access to a new vendor , she is inflicting a privacy loss on herself and on her collaborators too . based on analyzing a real dataset of 183 google drive users and 131 third party apps , we di...	cloud storage services , like dropbox and google drive , have growing ecosystems of 3rd party apps that are designed to work with users cloud files . such apps often request full access to users files , including files shared with collaborators . hence , whenever a user grants access to a new vendor , she is inflicting...
0902.2881	i	the most popular model for the central engines of long gamma - ray - burst ( grb ) jets is based on the `` failed supernova '' scenario of stellar collapse , or `` collapsar '' , where the iron core of progenitor star forms a bh @xcite . if the specific angular momentum in the equatorial part of progenitor exceeds that...	we explore whether this process can explain the stellar explosions and relativistic jets associated with long gamma - ray - bursts . in however , this energy deficit can be recovered via additional power provided by the disk . black hole physics supernovae : general gamma - rays : bursts methods : numerical mhd ...	collapse of massive stars may result in formation of accreting black holes in their interior . the accreting stellar matter may advect substantial magnetic flux onto the black hole and promote release of its rotational energy via magnetic stresses ( the blandford - znajek mechanism ) . in this paper we explore whether ...
0902.2881	c	in this paper we continued our study into the potential of the blandford - znajek mechanism as main driver in the central engines of gamma ray bursts . in particularly , we analysed the conditions for activation of the mechanism in the collapsar model where accumulation of magnetic flux by the central black hole is lik...	particularly , we show that the blandford - znajek mechanism is activated when the rest mass - energy density of matter drops below the energy density of magnetic field in the very vicinity of the black hole ( within its ergosphere ) . we also discuss whether such a strong magnetic field is in conflict with the rapid r...	collapse of massive stars may result in formation of accreting black holes in their interior . the accreting stellar matter may advect substantial magnetic flux onto the black hole and promote release of its rotational energy via magnetic stresses ( the blandford - znajek mechanism ) . in this paper we explore whether ...
1604.06244	i	the casimir effect ( for reviews see @xcite ) is among the most interesting boundary - induced effects in quantum field theory . nearly seventy years after its discovery , the effect continues to be area of active theoretical and experimental research today . this is due to of fundamental and practical importance of th...	complete set of cylindrical modes is constructed for the electromagnetic field inside and outside a cylindrical shell in the background of-dimensional ds spacetime . on the shell , the field obeys the generalized perfect conductor boundary condition . for the bunch - davies vacuum state the vacuum energy - momentum ten...	complete set of cylindrical modes is constructed for the electromagnetic field inside and outside a cylindrical shell in the background of-dimensional ds spacetime . on the shell , the field obeys the generalized perfect conductor boundary condition . for the bunch - davies vacuum state , we evaluate the expectation va...
1604.06244	c	in the investigations of the casimir effect the cylindrically symmetric boundaries are among the most popular geometries . in the present paper we have investigated the local casimir densities for the electromagnetic field inside and outside a cylindrical shell in background of @xmath0-dimensional ds spacetime . on the...	, we evaluate the expectation values ( vevs ) of the electric field squared and of the energy - momentum tensor . , the renormalization is reduced to the one for the vevs in the boundary - free ds bulk . as a special case , this flux is directed from the shell in both the exterior and interior regions . for points near...	complete set of cylindrical modes is constructed for the electromagnetic field inside and outside a cylindrical shell in the background of-dimensional ds spacetime . on the shell , the field obeys the generalized perfect conductor boundary condition . for the bunch - davies vacuum state , we evaluate the expectation va...
0911.1777	i	a bayesian data analysis specifies joint probability distributions to describe the relationship between the prior information , the model or hypotheses , and the data . using bayes theorem , the posterior distribution is uniquely determined from the conditional probability distribution of the unknowns given the observe...	computation of the marginal likelihood from a simulated posterior distribution is central to bayesian model selection but is computationally difficult . the often - used harmonic mean approximation uses the posterior directly but is unstably sensitive to samples with anomalously small values of the likelihood . the lap...	computation of the marginal likelihood from a simulated posterior distribution is central to bayesian model selection but is computationally difficult . the often - used harmonic mean approximation uses the posterior directly but is unstably sensitive to samples with anomalously small values of the likelihood . the lap...
cond-mat0004182	i	theoretical research on electronic properties in mesoscopic condensed matter systems has focussed primarily on the charge degrees of freedom of the electron , while its spin degrees of freedom have not yet received the same attention . however , an increasing number of spin - related experiments @xcite show that the s...	control over electron - spin states , such as coherent manipulation , filtering and measurement promises access to new technologies in conventional as well as in quantum computation and quantum communication . we review our proposal of using electron spins in quantum confined structures as qubits and discuss the requir...	control over electron - spin states , such as coherent manipulation , filtering and measurement promises access to new technologies in conventional as well as in quantum computation and quantum communication . we review our proposal of using electron spins in quantum confined structures as qubits and discuss the requir...
1405.5311	i	in recent years there has been a huge explosion in the variety of sensors and the dimensionality of the data produced by these sensors and this has been in a large number of applications ranging from imaging to other scientific applications.the total amount of data produced by the sensors is much more than the availabl...	conventional approaches of sampling signals follow the celebrated theorem of nyquist and shannon . compressive sampling , introduced by donoho , romberg and tao , is a new paradigm that goes against the conventional methods in data acquisition and provides a way of recovering signals using fewer samples than the tradit...	conventional approaches of sampling signals follow the celebrated theorem of nyquist and shannon . compressive sampling , introduced by donoho , romberg and tao , is a new paradigm that goes against the conventional methods in data acquisition and provides a way of recovering signals using fewer samples than the tradit...
1011.3041	i	weak gravitational lensing is a powerful technique for studying the distribution of matter in the universe due to its ability to model the matter distribution in foreground structures , independent of the nature of the matter present . as the light from background sources is bent around foreground lenses , the galaxy i...	current theories of structure formation predict specific density profiles of galaxy dark matter haloes , and with weak gravitational lensing we can probe these profiles on several scales . on small scales , higher - order shape distortions known as flexion add significant detail to the weak lensing measurements . [ fir...	current theories of structure formation predict specific density profiles of galaxy dark matter haloes , and with weak gravitational lensing we can probe these profiles on several scales . on small scales , higher - order shape distortions known as flexion add significant detail to the weak lensing measurements . we pr...