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we propose a simple but effective modular approach mopa ( modular objectnav with pointgoal agents ) to systematically investigate the inherent modularity of the object navigation task in embodied ai. mopa consists of four modules : ( a ) an object detection module trained to identify objects from rgb images, ( b ) a ma... | arxiv:2304.03696 |
this work presents an analysis of the functional derivative of the superconducting transition temperature t $ _ c $ with respect to the electron - phonon coupling function $ \ alpha ^ 2f ( \ omega ) $ [ $ \ delta t _ c / \ delta \ alpha ^ 2 $ f ( $ \ omega $ ) ] and $ \ alpha ^ 2f ( \ omega ) $ spectrum of h $ _ 3 $ s ... | arxiv:2006.15248 |
a frame is a generalization of a basis of a vector space to a redundant overspanning set whose vectors are linearly dependent. frames find applications in signal processing and quantum information theory. we present a genetic algorithm that can generate maximally orthogonal frames of arbitrary size $ n $ in $ d $ - dim... | arxiv:2504.21084 |
this paper proposes a novel approach to image deblurring and digital zooming using sparse local models of image appearance. these models, where small image patches are represented as linear combinations of a few elements drawn from some large set ( dictionary ) of candidates, have proven well adapted to several image r... | arxiv:1110.0957 |
some invariant sets may attract a nearby set of initial conditions but nonetheless repel a complementary nearby set of initial conditions. for a given invariant set $ x \ subset \ r ^ n $ with a basin of attraction $ n $, we define a stability index $ \ sigma ( x ) $ of a point $ x \ in x $ that characterizes the local... | arxiv:1008.3063 |
in the proposed sehybridsn model, a dense block was used to reuse shallow feature and aimed at better exploiting hierarchical spatial spectral feature. subsequent depth separable convolutional layers were used to discriminate the spatial information. further refinement of spatial spectral features was realized by the c... | arxiv:2111.10293 |
in this paper, we study power management ( pm ) policies for an energy harvesting additive white gaussian noise ( eh - awgn ) channel. the arrival rate of the harvested energy is assumed to remain unchanged during each data frame ( block code ) and to change independently across block codes. the harvested energy sequen... | arxiv:1808.00450 |
the combination of data from long - baseline and reactor oscillation experiments leads to a preference of the leptonic cp phase $ \ delta _ { \ rm cp } $ in the range between $ \ pi $ and $ 2 \ pi $. we study the statistical significance of this hint by performing a monte carlo simulation of the relevant data. we find ... | arxiv:1506.07685 |
we measure the shot noise of a quantum point - contact using a capacitively coupled inas double quantum dot as an on - chip sensor. our measurement signals are the ( bidirectional ) interdot electronic tunneling rates which are determined by means of time - resolved charge sensing. the detector frequency is set by the ... | arxiv:0904.3656 |
to explain the observed muon anomaly and simultaneously evade bounds from lepton flavor violation in the same model parameter space is a long cherished dream. in view of a generalized two higgs doublet model, with a yukawa structure as a perturbation of type - x, we are able to get substantial parameter space satisfyin... | arxiv:2103.10632 |
we study the dynamics of nuclear star clusters, the dense stellar environments surrounding massive black holes in the centers of galaxies. we consider angular momentum diffusion due to two - body scatterings among stellar objects and energy advection due to gravitational wave emission upon interaction with the central ... | arxiv:2406.07627 |
generative retrieval is a promising new paradigm in text retrieval that generates identifier strings of relevant passages as the retrieval target. this paradigm leverages powerful generative language models, distinct from traditional sparse or dense retrieval methods. in this work, we identify a viable direction to fur... | arxiv:2402.10769 |
we show that even small nonlinearities significantly affect particle production in the dynamical casimir effect at large evolution times. to that end, we derive the effective hamiltonian and resum leading loop corrections to the particle flux in a massless scalar field theory with time - dependent dirichlet boundary co... | arxiv:2108.07747 |
magnetic particle imaging ( mpi ) is an in - vivo imaging method to detect magnetic nanoparticles for blood vessel imaging and molecular target imaging. compared with conventional molecular imaging devices ( such as nuclear medicine imaging pet and spect ), magnetic nanoparticles have longer storage periods than radion... | arxiv:2404.16596 |
the rho - meson eletromagnetic form factors are calculated, both in covariant and light - front framework with constituintes quarks. the effect of the breakdown rotational symmetry for the one - body current operador in the null - plane is investigate by comparing calculations within ligth - front and covariant approac... | arxiv:nucl-th/9706032 |
we address the problem of compressed sensing ( cs ) with prior information : reconstruct a target cs signal with the aid of a similar signal that is known beforehand, our prior information. we integrate the additional knowledge of the similar signal into cs via l1 - l1 and l1 - l2 minimization. we then establish bounds... | arxiv:1408.5250 |
in signal processing the rudin - shapiro polynomials have good autocorrelation properties and their values on the unit circle are small. binary sequences with low autocorrelation coefficients are of interest in radar, sonar, and communication systems. in this paper we show that the mahler measure of the rudin - shapiro... | arxiv:1708.01189 |
it is well known that textual data on the internet and other digital platforms contain significant levels of bias and stereotypes. although many such texts contain stereotypes and biases that inherently exist in natural language for reasons that are not necessarily malicious, there are crucial reasons to mitigate these... | arxiv:2201.08643 |
here we report the results of searching millisecond pulsar ( msp ) candidates from the fermi lat second source catalog ( 2fgl ). seven unassociated $ \ gamma - $ ray sources in this catalog are identified as promising msp candidates based on their $ \ gamma $ - ray properties. through the x - ray analysis, we have dete... | arxiv:1507.02604 |
we prove that if for the curved $ n $ - body problem the masses are given, the minimum distance between the point masses of a specific type of relative equilibrium solution to that problem has a universal lower bound that is not equal to zero. we furthermore prove that the set of all such relative equilibria is compact... | arxiv:1401.3058 |
this paper generalizes the existing minimal model of the hypothalamic - pituitary - adrenal ( hpa ) axis in a realistic way, by including memory terms : distributed time delays, on one hand and fractional - order derivatives, on the other hand. the existence of a unique equilibrium point of the mathematical models is p... | arxiv:1611.08100 |
the paper explores the prospects of observing the phenomenon of dynamical anderson localisation via non - resonant raman - type rotational excitation of molecules by periodic trains of short laser pulses. we define conditions for such an experiment, and show that current femtosecond technology used for non - adiabatic ... | arxiv:1305.5995 |
the non - additive kinetic potential $ v ^ { \ text { nad } } $ is a key quantity in density - functional theory ( dft ) embedding methods, such as frozen density embedding theory and partition dft. $ v ^ { \ text { nad } } $ is a bi - functional of electron densities $ \ rho _ { \ rm b } $ and $ \ rho _ { \ rm tot } =... | arxiv:2207.04160 |
recent methods for embodied instruction following are typically trained end - to - end using imitation learning. this often requires the use of expert trajectories and low - level language instructions. such approaches assume that neural states will integrate multimodal semantics to perform state tracking, building spa... | arxiv:2110.07342 |
in this paper, we prove that there exists an equivalence between 2 - category of smooth deligne - mumford stacks with torus - embeddings and actions, and the 1 - category of stacky fans. for this purpose, we obtain two main results. the first is to investigate a combinatorial aspect of the 2 - category of toric algebra... | arxiv:math/0610548 |
multiple sequence alignment ( msa ) plays a pivotal role in unveiling the evolutionary trajectories of protein families. the accuracy of protein structure predictions is often compromised for protein sequences that lack sufficient homologous information to construct high quality msa. although various methods have been ... | arxiv:2406.05347 |
we analyze null - and spacelike radial geodesics in schwarzschild - de sitter spacetime connecting two conjugate static sphere observers, i. e. free - falling observers at a fixed radius in between the two horizons. we explicitly determine the changes in the causal structure with respect to these natural observers as a... | arxiv:2312.06878 |
object recognition and detection are well - studied problems with a developed set of almost standard solutions. identity documents recognition, classification, detection, and localization are the tasks required in a number of applications, particularly, in physical access control security systems at critical infrastruc... | arxiv:2503.01085 |
silicene, a hexagonal buckled 2 - d allotrope of silicon, shows potential as a platform for numerous new applications, and may allow for easier integration with existing silicon - based microelectronics than graphene. here, we show that silicene could function as an ultrafast electrical dna sequencing device. we invest... | arxiv:1404.2706 |
we analyze the problem of extracting the correlation length from infinite matrix product states ( mps ) and corner transfer matrix ( ctm ) simulations. when the correlation length is calculated directly from the transfer matrix, it is typically significantly underestimated for finite bond dimensions used in numerical s... | arxiv:1801.08554 |
we characterize exotic c * - algebras of twisted, principal \ ' etale groupoids, together with the abelian subalgebra associated to the unit space, as precisely being the inclusions " $ a \ subseteq b $ " of c * - algebras in which $ a $ is abelian, regular, and satisfies the extension property ( pure states extend uni... | arxiv:2110.09445 |
we demonstrate that the differential ac - stark shift of a ground - state hyperfine transition in an optical trap can be eliminated by using properly polarized trapping light. we use the vector polarizability of an alkali - metal atom to produce a polarization - dependent ac - stark shift that resembles a zeeman shift.... | arxiv:1311.1290 |
stress fibers are contractile actomyosin bundles commonly observed in the cytoskeleton of metazoan cells. the spatial profile of the polarity of actin filaments inside contractile actomyosin bundles is either monotonic ( graded ) or periodic ( alternating ). in the framework of linear irreversible thermodynamics, we wr... | arxiv:1011.6062 |
we present the x - ray analysis of the most luminous obscured active galactic nuclei ( agn ) inside local ultraluminous infrared galaxies ( ulirgs ). our sample consists of ten sources, harbouring agn components with estimated luminosity in excess of ~ 10 ^ 12 l _ sun and yet unidentified at optical wavelengths because... | arxiv:1103.3212 |
we study lifelong learning in linear bandits, where a learner interacts with a sequence of linear bandit tasks whose parameters lie in an $ m $ - dimensional subspace of $ \ mathbb { r } ^ d $, thereby sharing a low - rank representation. current literature typically assumes that the tasks are diverse, i. e., their par... | arxiv:2501.13390 |
mathematical modeling offers the opportunity to test hypothesis concerning myeloproliferative emergence and development. we tested different mathematical models based on a training cohort ( n = 264 patients ) ( registre de la c \ ^ ote d ' or ) to determine the emergence and evolution times before jak2v617f classical m... | arxiv:2406.06765 |
in modern - era video streaming systems, videos are streamed and displayed on a wide range of devices. such devices vary from large - screen uhd and hdtvs to medium - screen desktop pcs and laptops to smaller - screen devices such as mobile phones and tablets. it is well known that a video is perceived differently when... | arxiv:2305.03138 |
this paper has been withdrawn by the author due to that the main results and approaches are closedly parallel to the ones in lie algebra case. | arxiv:0911.3467 |
though appropriate for core internet infrastructure, the internet protocol is unsuited to routing within and between emerging ad - hoc edge networks due to its dependence on hierarchical, administratively assigned addresses. existing ad - hoc routing protocols address the management problem but do not scale to internet... | arxiv:cs/0603075 |
in neuroimaging studies, it becomes increasingly important to study associations between different imaging modalities using image - on - image regression ( iir ), which faces challenges in interpretation, statistical inference, and prediction. our motivating problem is how to predict task - evoked fmri activity using r... | arxiv:2311.05649 |
black holes and wormholes in the gravitational path integral can be used to calculate the statistics of heavy operators. an explicit example in higher dimensions is provided by thin shells of matter. we study these solutions in 3d gravity, and reproduce the behavior of black holes and wormholes from the dual cft using ... | arxiv:2404.15183 |
over the last decade, a large variety of clustering algorithms have been developed to detect coregulatory relationships among genes from microarray gene expression data. model based clustering approaches have emerged as statistically well grounded methods, but the properties of these algorithms when applied to large - ... | arxiv:0801.2033 |
we provide a characterization of the clifford torus in s3 via moving frames and contact structure equations. more precisely, we prove that minimal surfaces in s3 with constant contact angle must be the clifford torus. some applications of this result are then given, and some examples are discussed. | arxiv:0705.3089 |
the dynamics and decoherence of an electronic spin - 1 / 2 qubit coupled to a bath of nuclear spins via hyperfine interactions in a quantum dot is studied. we show how exact results from the integrable solution can be used to understand the dynamic behavior of the qubit. it is possible to predict the main frequency con... | arxiv:1005.0001 |
various authors have invoked discretized fractional brownian ( fbm ) motion as a model for chain polymers with long range interaction of monomers along the chain. we show that for these, in contrast to the brownian case, linear forces are acting between all pairs of constituents, attractive for small hurst index h and ... | arxiv:1907.09850 |
in logarithmic conformal field theory, primary fields come together with logarithmic partner fields on which the stress - energy tensor acts non - diagonally. exploiting this fact and global conformal invariance of two - and three - point functions, operator product expansions of logarithmic operators in arbitrary rank... | arxiv:hep-th/0107242 |
we investigate the two - dimensional lattice gross - neveu model, using the domain - wall fermion formulation, as a toy model of lattice qcd. we study features of the phase diagram related to the mechanism of chiral symmetry restoration, and find that the parity - broken phase ( aoki phase ) exists for finite extent in... | arxiv:hep-lat/9909153 |
it has been almost 40 years since the proposal of the idea that hawking radiation of black holes does not lead to a complete evaporation but rather a " remnant " state. though traditionally viewed with great criticisms especially from the high energy physics community, in recent years, various approaches have demonstra... | arxiv:2412.00322 |
we use weak gravitational lensing to analyse the dark matter halos around satellite galaxies in galaxy groups in the cfhtlens dataset. this dataset is derived from the cfhtls - wide survey, and encompasses 154 sq. deg of high - quality shape data. using the photometric redshifts, we divide the sample of lens galaxies w... | arxiv:1301.7421 |
astrometry and spectroscopy of the s - stars in the galactic center provide a unique way to probe the properties of the central supermassive black hole, as well as the post - newtonian effects caused by its gravity, e. g. gravitational redshift and general relativistic precession. it has also been suggested that the ph... | arxiv:2010.11435 |
searches for pseudo - magnetic spin couplings require implementation of techniques capable of sensitive detection of such interactions. while spin - exchange relaxation free ( serf ) magnetometry is one of the most powerful approaches enabling the searches, it suffers from a strong magnetic coupling, deteriorating the ... | arxiv:2107.05501 |
we compute the two - loop massless qcd corrections to the helicity amplitudes for the production of two massive vector bosons in quark - antiquark annihilation, allowing for an arbitrary virtuality of the vector bosons : $ q \ bar q ' \ to v _ 1v _ 2 $. combining with the leptonic decay currents, we obtain the full two... | arxiv:1503.04812 |
we discuss the relation between the two nucleon bethe - salpeter amplitude and the light front wave functions. both approaches provide a covariant description for the deuteron bound state and the two nucleon scattering state. a comparison is done for the spin - orbit functions as well explicit integrals are given on th... | arxiv:nucl-th/9811022 |
in this paper, we present a novel approach to developing an english automatic speech recognition ( asr ) system that can effectively handle hindi queries, without compromising its performance on english. we propose a novel acoustic model ( am ), referred to as splithead with attention ( sha ) model, features shared hid... | arxiv:2503.07522 |
we obtain a formula for the m \ " obius number of the socle of any group. specifically, the m \ " obius number of a direct product of simple groups is computed in terms of the m \ " obius numbers of the simple groups which make up the product. | arxiv:1002.3503 |
we present multi - frequency polarization observations of the diffuse radio synchrotron background modulated by faraday rotation. no total intensity is observed, indicating that total intensity does not vary on scales below approximately a degree. however, polarized intensity and polarization angle show abundant small ... | arxiv:astro-ph/0109312 |
in this paper we make a systematic study of certain motivic cohomology classes ( " rankin - eisenstein classes " ) attached to the rankin - - selberg convolution of two modular forms of weight $ \ ge 2 $. the main result is the computation of the $ p $ - adic syntomic regulators of these classes. as a consequence we pr... | arxiv:1501.03289 |
we study the tidal interaction of galaxies in the eridanus supergroup, using hi data from the pre - pilot survey of wallaby ( widefield askap l - band legacy all - sky blind survey ). we obtain optical photometric measurements and quantify the strength of tidal perturbation using a tidal parameter $ s _ { sum } $. for ... | arxiv:2112.06564 |
foundational vision models, such as the segment anything model ( sam ), have achieved significant breakthroughs through extensive pre - training on large - scale visual datasets. despite their general success, these models may fall short in specialized tasks with limited data, and fine - tuning such large - scale model... | arxiv:2408.05936 |
we consider the models of relaxational dynamics within the framework of berendsen ' s and nose - hoover ' s thermostats. on studying the crucial case of ideal gas we come to the conclusion that both models mentioned above do not allow for describing the true thermodynamical equilibrium. | arxiv:cond-mat/0112477 |
we study exact effective superpotentials of four - dimensional { \ cal n } = 2 supersymmetric gauge theories with gauge group u ( n ) and various amounts of fundamental matter on r ^ 3 x s ^ 1, broken to { \ cal n } = 1 by turning on a classical superpotential for the adjoint scalar. on general grounds these superpoten... | arxiv:hep-th/0411110 |
separation of competing speech is a key challenge in signal processing and a feat routinely performed by the human auditory brain. a long standing benchmark of the spectrogram approach to source separation is known as the ideal binary mask. here, we train a convolutional deep neural network, on a two - speaker cocktail... | arxiv:1503.06962 |
we present new bounds on the existence of general quantum maximum distance separable codes ( qmds ) : the length $ n $ of all qmds codes with local dimension $ d $ and distance $ d \ geq 3 $ is bounded by $ n \ leq d ^ 2 + d - 2 $. we obtain their weight distribution and present additional bounds that arise from rains ... | arxiv:1907.07733 |
mixed dark matter models with one low - mass ( e. g. 2. 4ev ) neutrino flavor are shown to be in good agreement with observations if the neutrinos have non - zero chemical potentials. this agreement holds ( except for the problem with a low - age universe ) even for high values of the hubble - parameter. massless neutr... | arxiv:astro-ph/9502052 |
given a max - plus linear system and a semimodule, the problem of computing the maximal controlled invariant subsemimodule is still open to this day. in this paper, we consider this problem for the specific class of fully actuated systems and constraints in the form of precedence semimodules. the assumption of full act... | arxiv:2503.03357 |
emerging technologies are technologies whose development, practical applications, or both are still largely unrealized. these technologies are generally new but also include old technologies finding new applications. emerging technologies are often perceived as capable of changing the status quo. emerging technologies ... | https://en.wikipedia.org/wiki/Emerging_technologies |
this article addresses a fundamental problem faced by the ab initio community : the lack of an effective formalism for the rapid exploration and exchange of new methods. to rectify this, we introduce a novel, basis - set independent, matrix - based formulation of generalized density functional theories which reduces th... | arxiv:cond-mat/9909130 |
over half a century from the discovery of gamma - ray bursts ( grbs ), the dominant radiation mechanism responsible for their bright and highly variable prompt emission remains poorly understood. spectral information alone has proven insufficient for understanding the composition and main energy dissipation mechanism i... | arxiv:2109.03286 |
does galaxy evolution proceed through the green valley via multiple pathways or as a single population? motivated by recent results highlighting radically different evolutionary pathways between early - and late - type galaxies, we present results from a simple bayesian approach to this problem wherein we model the sta... | arxiv:1501.05955 |
within the thermal wave model framework a comparison among wigner function, husimi function, and the phase - space distribution given by a particle tracking code is made for a particle beam travelling through a linear lens with small aberrations. the results show that the quantum - like approach seems to be very promis... | arxiv:acc-phys/9510003 |
we study fluctuation properties of a one - dimensional anisotropic heisenberg model out of equilibrium, focusing in particular on the gapped regime. within the open - system setting we study large - deviation properties of the spin current. numerically evaluating the first four current cumulants in a nonequilibrium sta... | arxiv:1405.5541 |
a challenge that machine learning practitioners in the industry face is the task of selecting the best model to deploy in production. as a model is often an intermediate component of a production system, online controlled experiments such as a / b tests yield the most reliable estimation of the effectiveness of the who... | arxiv:2105.13420 |
clouds play a crucial role in the earth ' s water and energy cycles, underscoring the importance of high spatiotemporal resolution data on cloud phase and properties for accurate numerical modeling and weather prediction. currently, moderate resolution imaging spectroradiometer ( modis ) provides cloud products with a ... | arxiv:2405.04483 |
in this letter, we propose a quantized topological response in trapped 1d quantum gases. the experimental protocol for the response requires the application of an instant optical pulse to a half - infinite region in an asymptotically harmonic trap and measuring the density distribution. we show that the corresponding l... | arxiv:2207.02382 |
a combined variable theory of gravity and scalar field is developed under adm formulation by redefining new canonical conjugate variables ( { \ phi }, { \ pi } ). it is a dynamical theory of the space - matter with implicit time dependence. quantizing this new field theory results in quantization of geometry and scalar... | arxiv:1704.04004 |
a large electric field is typically present in anodic or passive oxide films. stresses induced by such a large electric field are critical in understanding the breakdown mechanism of thin oxide films and improving their corrosion resistance. in this work, we consider electromechanical coupling through the electrostrict... | arxiv:2404.05093 |
grasp planning and most specifically the grasp space exploration is still an open issue in robotics. this article presents a data - driven oriented methodology to model the grasp space of a multi - fingered adaptive gripper for known objects. this method relies on a limited dataset of manually specified expert grasps, ... | arxiv:2109.08504 |
an experimental photochemistry study involving gas - and solid - phase amino acids ( glycine, dl - valine, dl - proline ) and nucleobases ( adenine and uracil ) under soft x - rays was performed. the aim was to test the molecular stabilities of essential biomolecules against ionizing photon fields inside dense molecula... | arxiv:1010.1771 |
in recent years, more and more gamma - ray bursts with late rebrightenings in multi - band afterglows unveil the late - time activities of the central engines. grb 100814a is a special one among the well - sampled events, with complex temporal and spectral evolution. the single power - law shallow decay index of the op... | arxiv:1504.01824 |
an increasing number of applications is concerned with recovering a sparse matrix from noisy observations. in this paper, we consider the setting where each row of the unknown matrix is sparse. we establish minimax optimal rates of convergence for estimating matrices with row sparsity. a major focus in the present pape... | arxiv:1509.00319 |
layered models like neural networks appear to extract key features from data through empirical risk minimization, yet the theoretical understanding for this process remains unclear. motivated by these observations, we study a two - layer nonparametric regression model where the input undergoes a linear transformation f... | arxiv:2310.11736 |
the brain is immensely complex, with diverse components and dynamic interactions building upon one another to orchestrate a wide range of functions and behaviors. understanding patterns of these complex interactions and how they are coordinated to support collective neural activity and function is critical for parsing ... | arxiv:2408.02640 |
fiber - reinforced polymer composite ( frpc ) materials are used extensively in various industries, such as aerospace, automobiles, and electronics packaging, due to their remarkable specific strength and desirable properties, such as enhanced durability and corrosion resistance. the evolution of thermal properties in ... | arxiv:2403.17650 |
we study the quantum walk in momentum space using a coin arranged in quasi - periodic sequences following a fibonacci prescription. we build for this system a classical map based on the trace of the evolution operator. the sub - ballistic behavior of this quantum walk is connected with the power - law decay of the time... | arxiv:0802.2289 |
since diarization and source separation of meeting data are closely related tasks, we here propose an approach to perform the two objectives jointly. it builds upon the target - speaker voice activity detection ( ts - vad ) diarization approach, which assumes that initial speaker embeddings are available. we replace th... | arxiv:2303.03849 |
we continue our account of relativistic recoil effects in muonic atoms and present explicitly analytic results at first order in electron - vacuum - polarization effects. the results are obtained within a grotch - type approach based on an effective dirac equation. some expressions are cumbersome and we investigate the... | arxiv:1311.5790 |
due to a printing error the above mentioned article [ annals of applied probability 10 ( 2000 ) 75 - - 103, doi : 10. 1214 / aoap / 1019737665 ] had numerous equations appearing incorrectly in the print version of this paper. the entire article follows as it should have appeared. ims apologizes to the author and the re... | arxiv:math/0610352 |
kernel methods are powerful and flexible approach to solve many problems in machine learning. due to the pairwise evaluations in kernel methods, the complexity of kernel computation grows as the data size increases ; thus the applicability of kernel methods is limited for large scale datasets. random fourier features (... | arxiv:1711.09783 |
the structure of transition amplitudes in field theory in a three - dimensional space whose spatial coordinates are noncommutative and satisfy the su ( 2 ) lie algebra commutation relations is examined. in particular, the basic notions for constructing the observables of the theory as well as subtleties related to the ... | arxiv:0712.1670 |
primordial magnetic fields ( pmfs ) may explain observations of magnetic fields on extragalactic scales. they are most cleanly constrained by measurements of cosmic microwave background radiation ( cmb ) anisotropies. their effects on cosmic recombination may even be at the heart of the resolution of the hubble tension... | arxiv:2312.11448 |
we present and compare two families of ensembles of random density matrices. the first, static ensemble, is obtained foliating an unbiased ensemble of density matrices. as criterion we use fixed purity as the simplest example of a useful convex function. the second, dynamic ensemble, is inspired in random matrix models... | arxiv:1407.7052 |
the galactic superluminal transient x - ray source grs 1915 + 105 was observed with the pointed proportional counters ( ppcs ) onboard the indian satellite irs - p3 during 1996 july 23 - 27. we report here details of the behavior of this source during the relatively quiet and low luminosity state. large intensity varia... | arxiv:astro-ph/9710283 |
we investigate new shapes of local primordial non - gaussianities in the cmb. allowing for a primordial isocurvature mode along with the main adiabatic one, the angular bispectrum is in general a superposition of six distinct shapes : the usual adiabatic term, a purely isocurvature component and four additional compone... | arxiv:1104.2567 |
elastic ed scattering, with deuteron polarization, up to high momentum transfer provides detailed information on the deuteron wave function. this determines the range dependence of the orbital and spin components of the one - and two - body currents, restricting contributions of isobar and meson - exchange currents and... | arxiv:nucl-th/0002026 |
the schrodinger equation is considered with the first order time derivative changed to a caputo fractional derivative, the time fractional schrodinger equation. the resulting hamiltonian is found to be non - hermitian and non - local in time. the resulting wave functions are thus not invariant under time reversal. the ... | arxiv:math-ph/0410028 |
mammalian offspring require parental care, at least in the form of suckling during their early development. while mothers need to invest considerable time and energy in ensuring the survival of their current offspring, they also need to optimize their investment in one batch of offspring in order to ensure future repro... | arxiv:1607.01135 |
modern observations based on general relativity indicate that the spatial geometry of the expanding, large - scale universe is very nearly euclidean. this basic empirical fact is at the core of the so - called " flatness problem ", which is widely perceived to be a major outstanding problem of modern cosmology and as s... | arxiv:1803.05148 |
in this paper we find chromatic numbers of distance graphs $ g ( n, 3, 2 ) $ for infinitely many n. also we improve upper bound for $ \ chi ( g ( n, r, s ) ) $ in large part of cases. | arxiv:1608.01873 |
evidence networks can enable bayesian model comparison when state - of - the - art methods ( e. g. nested sampling ) fail and even when likelihoods or priors are intractable or unknown. bayesian model comparison, i. e. the computation of bayes factors or evidence ratios, can be cast as an optimization problem. though t... | arxiv:2305.11241 |
in this paper, we investigate a decentralized control problem with nested subsystems, which is a general model for one - directional communication amongst many subsystems. the noises in our dynamics are modelled as uncertain variables which take values in finite sets. the objective is to minimize a worst - case shared ... | arxiv:2109.06328 |
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