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we present the results of a detailed analysis of rxte observations which show an unusual state transition between high - soft and low - soft states in the microquasar grs 1915 + 105. the rxte pointed observations reveal that these events appeared as a series of quasi - regular dips when hard x - ray and radio flux were... | arxiv:astro-ph/0208109 |
in this article, we present a complete classification of the negative parity $ \ xi ' _ { c / b } $ and $ \ xi _ { c / b } $ $ p $ - wave states : 7 belonging to the $ su ( 3 ) $ flavor sextet and 7 to the flavor anti - triplet, the calculation of the $ \ xi ' _ { c / b } $ and $ \ xi _ { c / b } $ strong partial decay... | arxiv:2010.12437 |
we study the restrictions imposed by cancellation of the tadpoles for two, three, and four - form gauge fields in string theory, m - theory and f - theory compactified to two, three and four dimensions, respectively. for a large class of supersymmetric vacua, turning on a sufficient number of strings, membranes and thr... | arxiv:hep-th/9606122 |
$ \ mathbb { z } _ 2 $ topological insulators for photons and in general bosons cannot be strictly implemented because of the lack of symmetry - protected pseudospins. we show that the required protection can be provided by the real - space topological excitation of an interacting quantum fluid : quantum vortex. we con... | arxiv:1709.01830 |
we discovered new hidden symmetry of the one - dimensional hubbard model. we showthat the one - dimensional hubbard model on the infinite chain has the infinite - dimensional algebra of symmetries. this algebra is a direct sum of two $ sl ( 2 ) $ - yangians. this $ y ( sl ( 2 ) ) \ oplus y ( sl ( 2 ) ) $ symmetry is an... | arxiv:hep-th/9310158 |
among theoretical issues in general relativity the problem of constructing its hamiltonian formulation is still of interest. the most of attempts to quantize gravity are based upon dirac generalization of hamiltonian dynamics for system with constraints. at the same time there exists another way to formulate hamiltonia... | arxiv:1303.1308 |
a detailed investigation of a superconducting spin - triplet valve is presented. this spin - valve consists of a superconducting film covering a metal with an intrinsic spiral magnetic order, which could result from competing isotropic exchanges or, if the crystal lattice breaks central symmetry, from asymmetric dzyalo... | arxiv:2110.00369 |
it is shown that epr correlations are the angular analogue to the hanbury - brown - - twiss effect. as insight provided by this model, it is seen that, analysis of the epr experiment requires conditional probabilities which do not admit the derivation of bell inequalities. | arxiv:quant-ph/9812072 |
we present smeftfr, a mathematica package designed to generate the feynman rules for the standard model effective field theory ( smeft ) including the complete set of gauge invariant operators up to dimension ~ 6. feynman rules are generated with the use of feynrules package, directly in the physical ( mass eigenstates... | arxiv:1904.03204 |
given two orientable, cusped hyperbolic 3 - manifolds containing certain thrice - punctured spheres, adams gave a diagrammatic definition for a third such manifold, their belted sum. fully augmented links, or fals, are hyperbolic links constructed by augmenting a link diagram. this work considers belted sum decompositi... | arxiv:2311.13540 |
modern code review ( mcr ) is an informal tool - assisted quality assurance practice. it relies on the asynchronous communication among the authors of code changes and reviewers, who are developers that provide feedback. however, from candidate developers, some are able to provide better feedback than others given a pa... | arxiv:2312.06244 |
group - based sparse representation has shown great potential in image denoising. however, most existing methods only consider the nonlocal self - similarity ( nss ) prior of noisy input image. that is, the similar patches are collected only from degraded input, which makes the quality of image denoising largely depend... | arxiv:1703.00297 |
this paper is concerned with the problem of continuous - time nonlinear filtering for stochastic processes on a connected matrix lie group. the main contribution of this paper is to derive the feedback particle filter ( fpf ) algorithm for this problem. in its general form, the fpf is shown to provide a coordinate - fr... | arxiv:1701.02416 |
our understanding of the brown dwarf population in star forming regions is dependent on knowing distances and proper motions, and therefore will be improved through the gaia space mission. in this paper, we select new samples of very low mass objects ( vlmos ) in upper scorpius using ukidss colors and optimised proper ... | arxiv:1710.11625 |
this paper has been withdrawn | arxiv:hep-th/0507254 |
when magnetic field lines thread a rotating black hole ' s horizon and connect with remote astrophysical loads, the rotational energy of the black hole can be extracted through the blandford - znajek mechanism. due to the rotation of the black hole, the magnetic field lines are twisted and toroidal components are gener... | arxiv:astro-ph/0001420 |
we report on the computation of a class of massless bosonic three - loop vacuum sum - integrals which are key building blocks for an evaluation of the debye screening mass in hot qcd. generalizing known techniques and introducing the concept of tensor reduction by dimensionality shifts ( known to the zero - temperature... | arxiv:1208.0284 |
previously, it was believed that conduction and valence bands exhibit a symmetry : they possess opposite topological invariants ( e. g., the chern numbers of conduction and valence bands for the chern insulator are $ \ pm c $ ). however, we present a counterexample : the second stiefel - whitney numbers for conduction ... | arxiv:2504.09524 |
for a given set of nodes in the plane the min - power centre is a point such that the cost of the star centred at this point and spanning all nodes is minimised. the cost of the star is defined as the sum of the costs of its nodes, where the cost of a node is an increasing function of the length of its longest incident... | arxiv:1307.1222 |
light - pulse atom interferometers are powerful quantum sensors, however, their accuracy for example in tests of the weak equivalence principle is limited by various spurious influences like magnetic stray fields or blackbody radiation. pushing the accuracy therefore requires a detailed assessment of the size of such d... | arxiv:2003.02042 |
we report a dramatic orbital modulation in the scintillation timescale of the relativistic binary pulsar j1141 - - 6545 that both confirms the validity of the scintillation speed methodology and enables us to derive important physical parameters. we have determined the space velocity, the orbital inclination and even t... | arxiv:astro-ph/0204421 |
image dehazing, a pivotal task in low - level vision, aims to restore the visibility and detail from hazy images. many deep learning methods with powerful representation learning capability demonstrate advanced performance on non - homogeneous dehazing, however, these methods usually struggle with processing high - res... | arxiv:2407.05169 |
this study investigates the task of knowledge - based question generation ( kbqg ). conventional kbqg works generated questions from fact triples in the knowledge graph, which could not express complex operations like aggregation and comparison in sparql. moreover, due to the costly annotation of large - scale sparql -... | arxiv:2208.12461 |
several observations reveal that dwarf galaxy segue 1 has a dark matter ( dm ) halo at least ~ 200 times more massive than its visible baryon mass of only ~ 103 solar masses. the baryon mass is dominated by stars with perhaps an interstellar gas mass of < 13 solar masses. regarding segue 1 as a dwarf disc galaxy by its... | arxiv:0909.3496 |
we show that the triply graded khovanov - rozansky homology of the torus link $ t _ { n, k } $ stablizes as $ k \ to \ infty $. we explicitly compute the stable homology ( as a ring ), which proves a conjecture of gorsky - oblomkov - rasmussen - shende. to accomplish this, we construct complexes $ p _ n $ of soergel bi... | arxiv:1505.08148 |
in this note we present studies of coverage and power for confidence intervals for a poisson process with known background calculated using the likelihood ratio ( aka feldman & cousins ) ordering with bayesian treatment of uncertainties in nuisance parameters. we consider both the variant where the bayesian integration... | arxiv:physics/0511055 |
in this paper author was proved the boundedness of the multidimensional hardy type operator in weighted lebesgue spaces with a variable exponent. as an application we prove the boundedness of certain sublinear operators on the weighted variable lebesgue space. note that the proof of multidimensional hardy type operator... | arxiv:1303.0302 |
deep learning and convolutional neural networks ( cnn ) have been intensively used in many image processing topics during last years. as far as steganalysis is concerned, the use of cnn allows reaching the state - of - the - art results. the performances of such networks often rely on the size of their learning databas... | arxiv:1801.04076 |
contrary to wide - spread opinion that the final state interaction ( fsi ) enhances the amplitude < 2 \ pi ; i = 0 | k ^ 0 >, we argue that fsi does not increase the absolute value of this amplitude. | arxiv:0710.2774 |
we make use of a semi - analytical model of galaxy formation to investigate the origin of the observed correlation between [ a / fe ] abundance ratios and stellar mass in elliptical galaxies. we implement a new galaxy - wide stellar initial mass function ( top heavy integrated galaxy initial mass function, th - igimf )... | arxiv:1402.3296 |
the trend of massive connectivity pushes forward the explosive growth of end devices. the emergence of various applications has prompted a demand for pervasive connectivity and more efficient computing paradigms. on the other hand, the lack of computational capacity of the end devices restricts the implementation of th... | arxiv:2402.18183 |
the physical importance of the apparent discrepancy between the detections by pre - batse missions of absorption lines in gamma - ray burst spectra and the absence of a batse line detection necessitates a statistical analysis of this discrepancy. this analysis requires a calculation of the probability that a line, if p... | arxiv:astro-ph/9703132 |
the equichordal point problem is a classical question in geometry, asking whether there exist multiple equichordal points within a single convex body. an equichordal point is defined as a point through which all chords of the convex body have the same length. this problem, initially posed by fujiwara and further invest... | arxiv:2501.02159 |
we present a self - supervised method to disentangle factors of variation in high - dimensional data that does not rely on prior knowledge of the underlying variation profile ( e. g., no assumptions on the number or distribution of the individual latent variables to be extracted ). in this method which we call nashae, ... | arxiv:2209.10677 |
after formulating a no - go theorem for perfect quantum - classical hybrid systems, a new consistency requirement based on standard statistical considerations is noted. it is shown that such requirement is not fulfilled by the mean - field approach, nor by the statistical ensemble approach. further unusual features of ... | arxiv:1201.4237 |
the soft - core boson system is one of the simplest models of supersolids, which have both off - diagonal long - range order ( bose - einstein condensation ) and diagonal long - range order ( crystalline order ). although this model has been studied from various points of view, studies of the stability of current - flo... | arxiv:1205.2126 |
soft supramolecular materials are promising for the design of innovative and highly tunable adhesives. these materials are composed of polymer chains functionalized by strongly interacting moieties, sometimes called " stickers ". in order to systematically investigate the effect of the presence of associative groups on... | arxiv:1609.04971 |
cross - lingual transfer is a leading technique for parsing low - resource languages in the absence of explicit supervision. simple ` direct transfer ' of a learned model based on a multilingual input encoding has provided a strong benchmark. this paper presents a method for unsupervised cross - lingual transfer that i... | arxiv:2101.11216 |
the behaviors of null geodesics in the spherical symmetric black holes in einstein - maxwell - dilaton ( emd ) theory with coupling function $ f ( \ phi ) = e ^ { - 2 \ alpha \ phi } $ are meticulously analyzed. we investigate the effects of coupling constant $ \ alpha $ on the effective potential of photon trajectorie... | arxiv:2310.04221 |
let $ f $ be a cuspidal eigenform of even weight and trivial nebentypus, let $ p $ be a prime not dividing the level of $ f $, and let $ \ rho _ f $ be the $ p $ - adic galois representation attached to $ f $. assume that the $ l $ - function attached to the symmetric cube of $ \ rho _ f $ vanishes to odd order at its ... | arxiv:2202.03585 |
the only place in the world where at this time standard model higgs bosons can be produced and detected is the tevatron at fermilab. in this contribution, the most recent results on the search for a low mass higgs boson are presented, using datasets of up to 1. 9 fb - 1. in the absence of signal, the combined tevatron ... | arxiv:0805.1248 |
we study the effects of local and distance interactions in the unidimensional contact process ( cp ). in the model, each site of a lattice is occupied by an individual, which can be healthy or infected. as in the standard cp, each infected individual spreads the disease to one of its first - neighbors with rate $ \ lam... | arxiv:1901.09969 |
context. the mechanism of disk formation around fast - rotating be stars is not well understood. in particular, it is not clear which mechanisms operate, in addition to fast rotation, to produce the observed variable ejection of matter. the star achernar is a privileged laboratory to probe these additional mechanisms b... | arxiv:1703.02839 |
gaussian process state space models ( gp - ssms ) are a non - parametric model class suitable to represent nonlinear dynamics. they become increasingly popular in data - driven modeling approaches, i. e. when no first - order physics - based models are available. although a gp - ssm produces well - behaved approximatio... | arxiv:1811.06646 |
we present a chemical kinetics model of the solid - phase chemical evolution of a comet, beginning with a long period of cold - storage in the oort cloud, followed by five orbits that bring the comet close to the sun. the chemical model is based on an earlier treatment that considered only the cold - storage phase, and... | arxiv:2408.15509 |
tydi is an open specification for streaming dataflow designs in digital circuits, allowing designers to express how composite and variable - length data structures are transferred over streams using clear, data - centric types. these data types are extensively used in a many application domains, such as big data and sq... | arxiv:2308.13436 |
quantum systems with a finite number of states at all times have been a primary element of many physical models in nuclear and elementary particle physics, as well as in condensed matter physics. today, however, due to a practical demand in the area of developing quantum technologies, a whole set of novel tasks for imp... | arxiv:2108.12499 |
population dynamics of a competitive two - species system under the influence of random events are analyzed and expressions for the steady - state population mean, fluctuations, and cross - correlation of the two species are presented. it is shown that random events cause the population mean of each specie to make smoo... | arxiv:2002.07307 |
selecting high - quality candidates from large datasets is critical in applications such as drug discovery, precision medicine, and alignment of large language models ( llms ). while conformal selection ( cs ) provides rigorous uncertainty quantification, it is limited to univariate responses and scalar criteria. to ad... | arxiv:2505.00917 |
a coordinate cone in r ^ n is an intersection of some coordinate hyperplanes and open coordinate half - spaces. a semi - monotone set is a defnable in an o - minimal structure over the reals, open bounded subset of r ^ n such that its intersection with any translation of any coordinate cone is connected. this can be vi... | arxiv:1004.5047 |
existing reconstruction models in snapshot compressive imaging systems ( sci ) are trained with a single well - calibrated hardware instance, making their performance vulnerable to hardware shifts and limited in adapting to multiple hardware configurations. to facilitate cross - hardware learning, previous efforts atte... | arxiv:2306.01176 |
recently, we introduced the " newman - penrose map, " a novel correspondence between a certain class of solutions of einstein ' s equations and self - dual solutions of the vacuum maxwell equations, which we showed was closely related to the classical double copy. here, we give an alternative definition of this corresp... | arxiv:2104.09525 |
we present a general construction of a geometric notion of circuit complexity for gaussian states ( both bosonic and fermionic ) in terms of riemannian geometry. we lay out general conditions that a riemannian metric function on the space of gaussian states should satisfy in order for it to yield a physically reasonabl... | arxiv:2309.14418 |
most models for weakly supervised video anomaly detection ( ws - vad ) rely on multiple instance learning, aiming to distinguish normal and abnormal snippets without specifying the type of anomaly. however, the ambiguous nature of anomaly definitions across contexts may introduce inaccuracy in discriminating abnormal a... | arxiv:2403.01169 |
objective kalman filtering has previously been applied to track neural model states and parameters, particularly at the scale relevant to eeg. however, this approach lacks a reliable method to determine the initial filter conditions and assumes that the distribution of states remains gaussian. this study presents an al... | arxiv:2301.08391 |
we introduce a new convexified matching method for missing value imputation and individualized inference inspired by computational optimal transport. our method integrates favorable features from mainstream imputation approaches : optimal matching, regression imputation, and synthetic control. we impute counterfactual ... | arxiv:2407.05372 |
it is customary to expect from a logical system that it can be algebraizable, in the sense that an algebraic companion of the deductive machinery can always be found. since the inception of da costa ' s paraconsistent calculi $ c _ n $, algebraic equivalents for such systems have been sought. it is known, however, that... | arxiv:2003.09522 |
with a view to exploring a new kind of phase transition in the process of hadronization of quark - gluon plasma ( qgp ) we investigate the occurrence of pentaquark baryons and tetraquark mesons in the system. for this purpose, the frame work of an analoguous saha ' s ionization formula for the colored ions in the syste... | arxiv:hep-ph/0507054 |
motivated by an application in community detection, we consider an \ er random graph conditioned on the rare event that all connected components are fully connected. such graphs can be considered as partitions of vertices into cliques. hence, this conditional distribution defines a distribution over partitions. we show... | arxiv:2405.13454 |
we present a heuristic algorithm for solving the problem of scheduling plans of tasks. the plans are ordered vectors of tasks, and tasks are basic operations carried out by resources. plans are tied by temporal, precedence and resource constraints that makes the scheduling problem hard to solve in polynomial time. the ... | arxiv:2102.03555 |
we present a proper off - mass - shell extension of the chiral reduction formula ( chrf ) proposed by yamagishi and zaned. this is achieved by rewriting the chrf in a manifestly consistent form with the conventional lsz reduction formula. | arxiv:hep-ph/0412281 |
cosmological simulations suggest that most of the matter in the universe is distributed along filaments connecting galaxies. illuminated by the cosmic uv background ( uvb ), these structures are expected to glow in fluorescent lyman alpha emission with a surface brightness ( sb ) that is well below current observationa... | arxiv:1706.03785 |
based on the previously suggested model of nanoscale dislocations induced josephson junctions and their arrays, we study the magnetic field induced electric polarization effects in intrinsically granular superconductors. in addition to a new phenomenon of chemomagnetoelectricity, the model predicts also a few other int... | arxiv:cond-mat/0506160 |
tensor network states are used extensively as a mathematically convenient description of physically relevant states of many - body quantum systems. those built on regular lattices, i. e. matrix product states ( mps ) in dimension 1 and projected entangled pair states ( peps ) in dimension 2 or higher, are of particular... | arxiv:1906.11682 |
undoubtedly, social media are brainstormed by a tremendous volume of stories, feedback, reviews, and reactions expressed in various languages and idioms, even though some are factually incorrect. these motifs make assessing such data challenging, time - consuming, and vulnerable to misinterpretation. this paper describ... | arxiv:2210.10726 |
we discuss the possibility of intermediate gauge coupling unification in unified models of string origin. useful relations of the \ beta - function coefficients are derived, which ensure unification of couplings when kaluza - - klein excitations are included above the compactification scale. we apply this procedure to ... | arxiv:hep-ph/9908462 |
for gradient flows of energies, both spectral renormalization ( srn ) and energy landscape ( el ) techniques have been used to establish slow motion of orbits near low - energy manifold. we show that both methods are applicable to flows induced by families of gradients and compare the scope and specificity of the resul... | arxiv:2001.00395 |
benefiting from both molecular tunability and versatile methods for deployment, optically interfaced molecular spins are a promising platform for quantum technologies such as sensing and imaging. room - temperature optically detected coherent spin control is a key enabler for many applications, combining sensitive read... | arxiv:2402.07572 |
by direct measurements of the gas temperature, the atacama large millimeter / sub - millimeter array ( alma ) has yielded a new diagnostic tool to study the solar chromosphere. here we present an overview of the brightness - temperature fluctuations from several high - quality and high - temporal - resolution ( i. e., ... | arxiv:2010.01918 |
we study the non - equilibrium dynamics of kicked ising models in $ 1 + 1 $ dimensions which have interactions alternating between odd and even bonds in time. these models can be understood as quantum circuits tiling space - time with the generalized space - time dual properties of tri - unitarity ( three " arrows of t... | arxiv:2312.12239 |
we present the results of an experiment documenting racial bias on meta ' s advertising platform in brazil and the united states. we find that darker skin complexions are penalized, leading to real economic consequences. for every \ $ 1, 000 an advertiser spends on ads with models with light - skin complexions, that ad... | arxiv:2412.14307 |
in this talk i introduce the critical behavior occurring at the extremal limit of black holes. the extremal limit of black holes is a critical point and a phase transition takes place from the extremal black holes to their nonextremal counterparts. some critical exponents satisfying the scaling laws are obtained. from ... | arxiv:gr-qc/9901026 |
some recently discovered short - period earth to neptune sized exoplanets ( super earths ) have low observed mean densities which can only be explained by voluminous gaseous atmospheres. here, we study the conditions allowing the accretion and retention of such atmospheres. we self - consistently couple the nebular gas... | arxiv:1512.07925 |
we examine the vacuum polarization contribution in the renormalization scheme of qed. normally, the quadratic divergence term is discarded under the condition that the counter term of the lagrangian density should be gauge invariant. here, it is shown that the whole contribution of the photon self - energy should not b... | arxiv:0901.3421 |
a moving dielectric medium can displace the optical path of light passing through it, a phenomenon known as the fresnel - fizeau optical drag effect. the resulting displacement is proportional to the medium ' s velocity. in this article, we report on an anomalous optical drag effect, where the displacement is still pro... | arxiv:2109.02534 |
this paper proposes a reconfigurable bidirectional array antenna with high - efficiency radiations and flexible beam - switching capability by employing a novel transmit - reflect switchable metasurface ( trsm ). to realize the electromagnetic ( em ) wave transmitted or reflected manipulation, a dedicated transmit - re... | arxiv:2505.08556 |
we fabricated fete0. 5se0. 5 superconducting wires using ex - situ powder - in - tube method with an fe sheath. it was amazing that superconducting current was observed in the as - drawn wire without any heat treatments. by heat treatment at 200c for 2 hours, tczero and jc at 4. 2 k were enhanced up to 9. 1 k and 64. 1... | arxiv:1012.1404 |
this paper introduces a novel statistical simulator designed to model propagation in two - way diffuse power ( twdp ) fading channels. the simulator employs two zero - mean stochastic sinusoids to simulate specular components, while a sum of sinusoids is used to model the diffuse one. using the developed simulator, the... | arxiv:2502.03388 |
we study an su ( n ) gauge - higgs model with n _ f massless fundamental fermions on m ^ 3 \ otimes s ^ 1. the model has two kinds of order parameters for gauge symmetry breaking : the component gauge field for the s ^ 1 direction ( hosotani mechanism ) and the higgs field ( higgs mechanism ). we find that the model po... | arxiv:hep-th/0305213 |
local solutions of riemann problems for quadratic systems of two conservation laws were constructed in the geometric context. in this paper, also for quadratic systems, we decompose the characteristic and sonic ' surfaces in their slow and fast components. these decompositions allow to decompose the wave manifold in re... | arxiv:1908.01870 |
in this paper, by employing the $ k _ { t } $ factorization theorem, we calculate firstly the next - to - leading - order ( nlo ) twist - 3 contributions to the pion electromagnetic form factors in the $ \ pi \ gamma ^ * \ to \ pi $ process. from the analytical and numerical calculations we find the following points : ... | arxiv:1401.5118 |
we introduce harper, a novel dataset for 3d body pose estimation and forecast in dyadic interactions between users and spot, the quadruped robot manufactured by boston dynamics. the key - novelty is the focus on the robot ' s perspective, i. e., on the data captured by the robot ' s sensors. these make 3d body pose ana... | arxiv:2403.14447 |
we revisit the integrability of quantum circuits constructed from two - qubit unitary gates $ u $ that satisfy the yang - baxter equation. a brickwork arrangement of $ u $ typically corresponds to an integrable trotterization of some hamiltonian dynamics. here, we consider more general circuit geometries which include ... | arxiv:2503.04673 |
in this paper, we consider the small viscosity limit problem for the isentropic compressible navier - stokes equations in a 2d exterior domain with impermeable boundary conditions, and the corresponding euler equations have vortex sheet solutions. we obtain that away from the boundary and the contact discontinuous the ... | arxiv:1906.10599 |
despite impressive progress in areas like mathematical reasoning, large language models still face significant challenges in consistently solving complex problems. drawing inspiration from key human learning strategies, we propose two novel strategies to enhance the capability of large language models to solve these co... | arxiv:2505.08364 |
the languages of logics based on team semantics typically only allow atomic negation or restricted negation. in this paper, we explore propositional team - based logics with full ( intuitionistic ) negation. we demonstrate that including full intutionistic negation does not complicate the axiomatization of propositiona... | arxiv:2410.08413 |
generalized density dependence in skyrme effective interactions is investigated to get forces valid beyond the mean field approximation. preliminary results are presented for infinite symmetric and asymmetric nuclear matter up to pure neutron matter. | arxiv:nucl-th/0309012 |
we show that berkovich analytic geometry can be viewed as relative algebraic geometry in the sense of to \ " { e } n - - vaqui \ ' { e } - - vezzosi over the category of non - archimedean banach spaces. for any closed symmetric monoidal quasi - abelian category we can define a topology on certain subcategories of the o... | arxiv:1312.0338 |
recommender systems have become increasingly important with the rise of the web as a medium for electronic and business transactions. one of the key drivers of this technology is the ease with which users can provide feedback about their likes and dislikes through simple clicks of a mouse. this feedback is commonly col... | arxiv:2411.01843 |
the $ b _ { c } $ $ { \ to } $ $ j / { \ psi } { \ pi } $, $ { \ eta } _ { c } { \ pi } $ decays are studied in the scheme of the qcd factorization approach. the branching ratios are calculated with the asymptotic distribution amplitude of the pion. the charm quark mass effect is considered. we find that the mass effec... | arxiv:0710.0031 |
we study a model of quantum cosmology originating from a classical model of gravitation where a self interacting scalar field is coupled to gravity with the metric undergoing a signature transition. we show that there are dual classical signature changing solutions, one at large scales and the other at small scales. it... | arxiv:gr-qc/9906115 |
computability theory is traditionally conceived as the theoretical basis of informatics. nevertheless, numerous proposals transcend computability theory, in particular by emphasizing interaction of modules, or components, parts, constituents, as a fundamental computing feature. in a technical framework, interaction req... | arxiv:2408.15031 |
we study the magnetotransport properties of patterned 3d topological insulator nanostructures with several leads, such as kinks or y - junctions, near the dirac point with analytical as well as numerical techniques. the interplay of the nanostructure geometry, the external magnetic field and the spin - momentum locking... | arxiv:1801.09230 |
aneutronic and nonradioactive properties make the proton - boron fusion a prospective candidate for fusion energy production through reactions following p + $ ^ { 11 } $ b $ \ rightarrow $ 3 $ { \ alpha } $ ( p - $ ^ { 11 } $ b ). however, it is difficult to achieve a thermal fusion ignition, since the low reaction cro... | arxiv:2401.07253 |
climate is an evolving complex system with dynamic interactions and non - linear feedback mechanisms, shaping environmental and socio - economic outcomes. crop production is highly sensitive to such climatic fluctuations. this paper studies the price volatility of agricultural crops as influenced by meteorological vari... | arxiv:2503.11690 |
in this paper we investigate the use of quantum information to share classical secrets. while every quantum secret sharing scheme is a quantum error correcting code, the converse is not true. motivated by this we sought to find quantum codes which can be converted to secret sharing schemes. if we are interested in shar... | arxiv:0905.1661 |
the x - ray - flash xrf030723 was detected by the hete satellite and rapidly disseminated, allowing for an optical transient to be detected ~ 1 day after the burst. we discuss observations in the optical with magellan, which confirmed the fade of the optical transient. in a 2 - epoch too observation with chandra, we di... | arxiv:astro-ph/0401020 |
even the most sensitive cosmic microwave background anisotropy experiments have signal to noise ratios < = 5, so that an accurate determination of the properties of the cosmological signal requires a careful assessment of the experimental noise. most of the experiments combine simultaneous multi - channel observations ... | arxiv:astro-ph/9702181 |
this paper was withdrawn by the editors of sigma as it essentially coincides with phys. lett. b 451 ( 1999 ), no. 3 - 4, 349 - 353. | arxiv:hep-th/0603148 |
this dissertation examines the impact of quantum gravity on electromagnetism and its backreaction, using perturbative general relativity as an effective field theory. our analysis involves quantum - correcting maxwell ' s equations to obtain a gauge - independent, real, and causal effective field equation that describe... | arxiv:2307.02580 |
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