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we study the possible annihilation cross section of scalar dark matter and its coupling \ lambda _ d to the standard model higgs in the case of the electroweak symmetry breaking driven by unparticle. here the annihilation process occurs with the help of three intermediate scalars which appear after the mixing. by respe... | arxiv:0904.4369 |
the cdf and d0 experiments have measured single and double top quark production in ppbar collisions at the tevatron at a centre - of - mass energy of 1. 96tev. the applied methods are used to constrain properties of the top quark and to search for new physics. several methods of signal to background separation and of t... | arxiv:1006.1275 |
recently, through development of several 3d vision systems, widely used in various applications, medical and biometric fields. microsoft kinect sensor have been most of used camera among 3d vision systems. microsoft kinect sensor can obtain depth images of a scene and 3d coordinates of human joints. thus, anthropometri... | arxiv:2409.08847 |
we propose a way to learn visual features that are compatible with previously computed ones even when they have different dimensions and are learned via different neural network architectures and loss functions. compatible means that, if such features are used to compare images, then " new " features can be compared di... | arxiv:2003.11942 |
we show how an effect algebra $ \ mathcal { x } $ can be regarded as a category, where the morphisms $ x \ rightarrow y $ are the elements $ f $ such that $ x \ leq f \ leq y $. this gives an embedding $ \ mathbf { ea } \ rightarrow \ mathbf { cat } $. the interval $ [ x, y ] $ proves to be an effect algebra in its own... | arxiv:2303.17257 |
artificial intelligence ( ai ) and machine learning ( ml ) are increasingly used in energy and engineering systems, but these models must be fair, unbiased, and explainable. it is critical to have confidence in ai ' s trustworthiness. ml techniques have been useful in predicting important parameters and in improving mo... | arxiv:2301.06676 |
shame has clear biological roots and its precise form of expression affects social cohesion and cultural characteristics. here we explore the relative importance between shame and guilt by using google translate to produce translation for the words shame, guilt, pain, embarrassment and fear to the 64 languages covered.... | arxiv:1401.1100 |
the wavelet tree ( grossi et al. [ soda, 2003 ] ) and wavelet matrix ( claude et al. [ inf. syst., 2015 ] ) are compact data structures with many applications such as text indexing or computational geometry. by continuing the recent research of fischer et al. [ alenex, 2018 ], we explore the similarities and difference... | arxiv:2002.08061 |
is commonly referred to as clean, old - fashioned hate, which is also the title of a book about the subject. there is also a long - standing rivalry with clemson. tech has eighteen varsity sports : football, women ' s and men ' s basketball, baseball, softball, volleyball, golf, men ' s and women ' s tennis, men ' s an... | https://en.wikipedia.org/wiki/Georgia_Tech |
famous for its superior performance, deep learning ( dl ) has been popularly used within many applications, which also at the same time attracts various threats to the models. one primary threat is from adversarial attacks. researchers have intensively studied this threat for several years and proposed dozens of approa... | arxiv:2209.09577 |
in this paper, we will study the statistical behaviors of orbits. firstly, we will show that for a dynamical systems have the shadowing property or almost specification property, the set of nonrecurrent points has full topological entropy. after that, we introduce a criteria for classification of dynamical orbits in or... | arxiv:1701.01910 |
we present a new framework based on quantization theory to design cellular networks optimized for both legacy ground users and uncrewed aerial vehicle ( uav ) corridors, dedicated aerial highways for safe uav flights. our framework leverages antenna tilts and transmit power at each base station to enhance coverage and ... | arxiv:2308.01440 |
undesirable electron field emission ( a. k. a. dark current ) in high gradient rf photocathode guns deteriorates the quality of photoemission current and limits the operational gradient. to improve the understanding of dark current emission, a high - resolution ( ~ 100 um ) dark current imaging experiment has been perf... | arxiv:1604.04086 |
we present the first measurements of the attenuation of transverse sound in superfluid 3he - b. we use fixed path length interferometry combined with the magneto - acoustic faraday effect to vary the effective path length by a factor of two, resulting in absolute values of the attenuation. we find that attenuation is s... | arxiv:0807.2221 |
in a given problem, the bayesian statistical paradigm requires the specification of a prior distribution that quantifies relevant information about the unknowns of main interest external to the data. in cases where little such information is available, the problem under study may possess an invariance under a transform... | arxiv:1703.04661 |
this paper investigates the effect of network topology on the fair allocation of network resources among a set of agents, an all - important issue for the efficiency of transportation networks all around us. we analyse a generic mechanism that distributes network capacity fairly among existing flow demands. the problem... | arxiv:1108.0025 |
zhao et al. [ phys. rev. b 62, r11 949 ( 2000 ) ] reported studies of the oxygen - isotope effects on the intrinsic resistivity and thermoelectric power in the paramagnetic state of several ferromagnetic manganites. the isotope effects on the intrinsic electrical transport properties are not consistent with a simple sm... | arxiv:cond-mat/0501400 |
parameter identification problems typically consist of a model equation, e. g. a ( system of ) ordinary or partial differential equation ( s ), and the observation equation. in the conventional reduced setting, the model equation is eliminated via the parameter - to - state map. alternatively, one might consider both s... | arxiv:1603.05332 |
in this paper it is proved that for families of stochastic operators on a countable tensor product, depending smoothly on parameters, any spectral projection persists smoothly, where smoothness is defined using norms based on ideas of dobrushin. a rigorous perturbation theory for families of stochastic operators with s... | arxiv:2204.06419 |
the current findings in the field of mathematics education. = = = important results = = = one of the strongest results in recent research is that the most important feature of effective teaching is giving students " the opportunity to learn ". teachers can set expectations, times, kinds of tasks, questions, acceptable ... | https://en.wikipedia.org/wiki/Mathematics_education |
using the basic lie symmetry method, we find the most general lie point symmetries group of the $ \ nabla u = f ( u ) $ poisson ' s equation, which has a subalgebra isomorphic to the $ 3 - $ dimensional special euclidean group $ { \ rm se } ( 3 ) $ or group of rigid motions of $ { \ bbb r } ^ 3 $. looking the adjoint r... | arxiv:0908.3619 |
we investigate the asymptotic behavior of peculiar velocities in certain physically significant time - dependent gravitational fields. previous studies of the motion of free test particles have focused on the \ emph { collapse scenario }, according to which a double - jet pattern with lorentz factor $ \ gamma \ to \ in... | arxiv:1405.4430 |
many disk galaxies are lopsided : their brightest inner parts are displaced from the center of the outer isophotes, or the outer contours of the hi disk. this asymmetry is particularly common in small, low - luminosity galaxies. we argue here that long - lived lopsidedness is a consequence of the disk lying off - cente... | arxiv:astro-ph/9803146 |
we set up a tunneling approach to the analogue hawking effect in the case of models of analogue gravity which are affected by dispersive effects. an effective schroedinger - like equation for the basic scattering phenomenon in - > p + n *, where in is the incident mode, p is the positive norm reflected mode, and n * is... | arxiv:1411.7871 |
in a recent letter [ phys. rev. lett. 105 ( 2010 ) 036804 ] the unoccupied electronic states of single layers of graphene on ruthenium are investigated. here we comment on the interpretation, which deviates in four points from [ j. phys. : condens. matter 22 ( 2010 ) 302001 ] and outline the corresponding consequences. | arxiv:1008.1777 |
the em algorithm is a widely used methodology for penalized likelihood estimation. provable monotonicity and convergence are the hallmarks of the em algorithm and these properties are well established for smooth likelihood and smooth penalty functions. however, many relaxed versions of variable selection penalties are ... | arxiv:0901.0017 |
we find a solvable limit to the problem of the 1d electron gas interacting with a lattice of kondo scattering centers. in this limit, we present exact results for the problems of incommensurate filling, commensurate filling, impurity vacancy states, and the commensurate - incommensurate transition. | arxiv:cond-mat/9508109 |
the reconstruction of micro - doppler signatures of human movements is a key enabler for fine - grained activity recognition wireless sensing. in joint communication and sensing ( jcs ) systems, unlike in dedicated radar sensing systems, a suitable trade - off between sensing accuracy and communication overhead has to ... | arxiv:2306.14233 |
there are many natural, physical, and biological systems that exhibit multiple time scales. for example, the dynamics of a population of ticks can be described in continuous time during their individual life cycle yet discrete time is used to describe the generation of offspring. these characteristics cause the populat... | arxiv:0907.1609 |
to better understand the temporal behavior of a roughening meniscus driven by capillary forces during the imbibition of a viscous fluid in porous media, we measure the height - height autocorrelation function $ c ( t ) $ using a constant driving force. we find $ c ( t ) \ sim t ^ { \ beta } $, with $ \ beta = 0. 56 \ p... | arxiv:cond-mat/9606130 |
in this article, we examine whether the gold market returns show abnormally positive or negative returns in some months of the calendar year. the statistical analysis and the decomposition techniques suggest that gold prices show some seasonal behavior during the turn of the year. we observe a strong cyclical behavior ... | arxiv:2003.11027 |
large - scale atomistic simulations using the reactive empirical bond order force field approach is implemented to investigate thermal and mechanical properties of single - layer ( sl ) and multi - layer ( ml ) molybdenum disulfide ( mos $ _ 2 $ ). the amplitude of the intrinsic ripples of sl - mos $ _ 2 $ are found to... | arxiv:1412.1939 |
in this letter we examine the two - component hirota ( th ) equations which describes the pulse propagation in a coupled fiber with higher - order dispersion and self - steepening. as the th equations is a complete integrable system, which admits a $ 3 \ times 3 $ ablowitz - kaup - newell - segu ( akns ) - type lax pai... | arxiv:1809.07035 |
the infiltration of molten silicon into carbon preforms is a widespread technique employed in the industry in order to enhance the thermal and mechanical properties of the final ceramic products. a proper understanding of this phenomenon is quite challenging since it stems from the reciprocal action and reaction betwee... | arxiv:1309.6726 |
this paper analyzes the bank lending channel and the heterogeneous effects on the euro area, providing evidence that the channel is indeed working. the analysis of the transmission mechanism is based on structural impulse responses to an unconventional monetary policy shock on bank loans. the bank lending survey ( bls ... | arxiv:1807.04161 |
the energy gradient method has been proposed with the aim of better understanding the mechanism of flow transition from laminar flow to turbulent flow. in this method, it is demonstrated that the transition to turbulence depends on the relative magnitudes of the transverse gradient of the total mechanical energy which ... | arxiv:nlin/0501048 |
we study black - box reward poisoning attacks against reinforcement learning ( rl ), in which an adversary aims to manipulate the rewards to mislead a sequence of rl agents with unknown algorithms to learn a nefarious policy in an environment unknown to the adversary a priori. that is, our attack makes minimum assumpti... | arxiv:2102.08492 |
computing devices are composed of spatial arrangements of simple funda - mental logic gates. these gates may be combined to form more complex adding circuits and, ultimately, complete computer systems. implementing classical adding circuits using unconventional, or even living substrates such as slime mould physarum po... | arxiv:1511.05865 |
in recent years large efforts have been made to detect molecular gas towards high redshifted objects. up to now the literature reports on only two cases of co - detection in quasars at a redshift between 1 and 2 - q0957 + 561, a gravitationally lensed system at z = 1. 41 ( planesas et al. 1999 ), and hr10 at z = 1. 44 ... | arxiv:astro-ph/0311600 |
a weak order on the set of maximal chains of the non - crossing partition lattice is introduced and studied. a $ 0 $ - hecke algebra action is used to compute the radius of the graph on these chains in which two chains are adjacent if they differ in exactly one element. | arxiv:1201.4669 |
current cosmological data indicate that our universe contains a substantial component of dark vacuum energy that is driving the cosmos to accelerate. we examine the immediate and longer term consequences of this dark energy ( assumed here to have a constant density ). using analytic calculations and supporting numerica... | arxiv:astro-ph/0305211 |
we argue that it is fundamentally impossible to recover information about quantum superpositions when a system has interacted with a sufficiently large number of degrees of freedom of the environment. this is due to the fact that gravity imposes fundamental limitations on how accurate measurements can be. this leads to... | arxiv:0905.4222 |
many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. we examine the power of jet substructure tools to extend the 7 tev lhc sensitivity to these new states for the case of qcd octet mesons, considering both two gluon a... | arxiv:1107.3563 |
we give an overview on the quantization problem for fractal measures, including some related results and methods which have been developed in the last decades. based on the work of graf and luschgy, we propose a three - step procedure to estimate the quantization errors. we survey some recent progress, which makes use ... | arxiv:1501.04814 |
topological crystalline insulators ( tcis ) can host anomalous surface states which inherits the characteristics of crystalline symmetry that protects the bulk topology. especially, the diversity of magnetic crystalline symmetries indicates the potential for novel magnetic tcis with distinct surface characteristics. he... | arxiv:2210.10740 |
matrix multivariate pearson type ii - riesz distribution is defined and some of its properties are studied. in particular, the associated matrix multivariate beta distribution type i is derived. also the singular values and eigenvalues distributions are obtained. | arxiv:1506.07509 |
the parker hypothesis ( parker ( 1972 ) ) assumes that heating of coronal loops occurs due to reconnection, induced when photospheric motions braid field lines to the point of current sheet formation. in this contribution we address the question of how the nature of photospheric motions affects heating of braided coron... | arxiv:1508.05001 |
the photonic lantern nuller ( pln ) is an instrument concept designed to characterize exoplanets within a single beam - width from its host star. the pln leverages the spatial symmetry of a mode - selective photonic lantern ( mspl ) to create nulled ports, which cancel out on - axis starlight but allow off - axis exopl... | arxiv:2503.24292 |
we describe a kinematic method which is capable of determining the overall mass scale in susy - like events at a hadron collider with two missing ( dark matter ) particles. we focus on the kinematic topology in which a pair of identical particles is produced with each decaying to two leptons and an invisible particle (... | arxiv:0707.0030 |
internet image collections containing photos captured by crowds of photographers show promise for enabling digital exploration of large - scale tourist landmarks. however, prior works focus primarily on geometric reconstruction and visualization, neglecting the key role of language in providing a semantic interface for... | arxiv:2404.16845 |
supersymmetric contribution to the muon anomalous magnetic moment a _ \ mu is discussed in the no - scale - type supersymmetry breaking scenarios. taking the correlation between the supersymmetric contributions to a _ \ mu and br ( b \ to s \ gamma ), it is shown that the precise measurements of these quantities serve ... | arxiv:hep-ph/0103182 |
understanding knowledge mechanisms in large language models ( llms ) is crucial for advancing towards trustworthy agi. this paper reviews knowledge mechanism analysis from a novel taxonomy including knowledge utilization and evolution. knowledge utilization delves into the mechanism of memorization, comprehension and a... | arxiv:2407.15017 |
in \ textit { sigma } \ textbf { 17 } ( 2021 ), 091, 12 p. p. \ we have presented an integrable system with a negative time variable number for the davey - stewartson hierarchy. here we develop this approach to construct an integrable equation with a lower time variable number. in addition, we show that the system redu... | arxiv:2410.00211 |
in this paper, we construct a supersymmetric composite axion ( c - axion ) model based on the gauge group $ su ( n ) \ times su ( m ) $, which is one possible physical application of the n = 1 duality. the dual of su ( m ) is interpreted as the color gauge group. we illustrate the existence of c - axion for the case of... | arxiv:hep-ph/9708307 |
the intertwining of electron - hole correlation and nontrivial topology is known to give rise to exotic topological excitonic insulators. here, we show that the involvement of quantum geometry can lead to more exotic excitonic phases exhibiting physical properties that are not determined by their topology but geometry.... | arxiv:2412.09305 |
in this paper, we show how to extend the notion of reducibility introduced by girard for proving the termination of $ \ beta $ - reduction in the polymorphic $ \ lambda $ - calculus, to prove the termination of various kinds of rewrite relations on $ \ lambda $ - terms, including rewriting modulo some equational theory... | arxiv:1509.00649 |
we develop a forward - reverse em ( frem ) algorithm for estimating parameters that determine the dynamics of a discrete time markov chain evolving through a certain measurable state space. as a key tool for the construction of the frem method we develop forward - reverse representations for markov chains conditioned o... | arxiv:1501.07091 |
join order optimization is critical in achieving good query performance. despite decades of research and practice, modern query optimizers could still generate inferior join plans that are orders of magnitude slower than optimal. existing research on robust query processing often lacks theoretical guarantees on join - ... | arxiv:2502.15181 |
graph neural networks ( gnns ) are proven to be powerful models to generate node embedding for downstream applications. however, due to the high computation complexity of gnn inference, it is hard to deploy gnns for large - scale or real - time applications. in this paper, we propose to accelerate gnn inference by prun... | arxiv:2105.04528 |
we define the notions of micro - support and regularity for ind - sheaves, and prove their invariance by contact transformations. we apply the results to the ind - sheaves of temperate holomorphic solutions of d - modules. we prove that the micro - support of such an ind - sheaf is the characteristic variety of the cor... | arxiv:math/0108065 |
we report the detection, with a high level of confidence, of coherent outflows around voids found in the seventh data release of the sloan digital sky survey ( sdss dr7 ). in particular, we developed a robust < | cos theta | > statistical test to quantify the strength of redshift - space distortions ( rsd ) associated ... | arxiv:1203.6407 |
in actuarial research, a task of particular interest and importance is to predict the loss cost for individual risks so that informative decisions are made in various insurance operations such as underwriting, ratemaking, and capital management. the loss cost is typically viewed to follow a compound distribution where ... | arxiv:1910.05676 |
considerable progress has recently been made in leveraging clip ( contrastive language - image pre - training ) models for text - guided image manipulation. however, all existing works rely on additional generative models to ensure the quality of results, because clip alone cannot provide enough guidance information fo... | arxiv:2212.02122 |
we present numerical computations of the equilibrium configurations of tidally - locked homogeneous binaries, rotating in circular orbits. unlike the classical roche approximations, we self - consistently account for the tidal and rotational deformations of both components, and relax the assumptions of ellipsoidal conf... | arxiv:1006.5455 |
coherent control of quantum states is at the heart of implementing solid - state quantum processors and testing quantum mechanics at the macroscopic level. despite significant progress made in recent years in controlling single - and bi - partite quantum systems, coherent control of quantum wave function in multipartit... | arxiv:1004.4657 |
developing frequency combs spectral technologies has potential applications and prospects in the wide fields of cosmology, meteorology, and microwave measurement. here, we demonstrate a rydberg microwave frequency comb spectrometer via multiple - microwave field dressing, providing precise microwave measurement. the ry... | arxiv:2206.06572 |
we consider meshless approximation for solutions of boundary value problems ( bvps ) of elliptic partial differential equations ( pdes ) via symmetric kernel collocation. we discuss the importance of the choice of the collocation points, in particular by using greedy kernel methods. we introduce a scale of pde - greedy... | arxiv:2207.13971 |
the standard electroweak theory of leptons and the conformal groups of spacetime weyl ' s transformations are at the core of a general relativistic, conformally covariant scalar tensor theory aimed at the resolution of the most intriguing enigma of modern physics : the cosmological constant paradox ( hereafter : lambda... | arxiv:1703.09214 |
the lick agn monitoring project targeted 13 nearby seyfert 1 galaxies with the intent of measuring the masses of their central black holes using reverberation mapping. the sample includes 12 galaxies selected to have black holes with masses roughly in the range 10 ^ 6 - 10 ^ 7 solar masses, as well as the well - studie... | arxiv:0909.5455 |
more investment by knowledgeable personnel. = = = = learning content management system = = = = a learning content management system ( lcms ) is software for author content ( courses, reusable content objects ). an lcms may be solely dedicated to producing and publishing content that is hosted on an lms, or it can host ... | https://en.wikipedia.org/wiki/Educational_technology |
we present a method to compute, quickly and efficiently, the mutual information achieved by an iid ( independent identically distributed ) complex gaussian input on a block rayleigh - faded channel without side information at the receiver. the method accommodates both scalar and mimo ( multiple - input multiple - outpu... | arxiv:1001.2283 |
on a conformal net $ \ mathcal { a } $, one can consider collections of unital completely positive maps on each local algebra $ \ mathcal { a } ( i ) $, subject to natural compatibility, vacuum preserving and conformal covariance conditions. we call \ emph { quantum operations } on $ \ mathcal { a } $ the subset of ext... | arxiv:2204.14105 |
binarization of neural networks is a dominant paradigm in neural networks compression. the pioneering work binaryconnect uses straight through estimator ( ste ) to mimic the gradients of the sign function, but it also causes the crucial inconsistency problem. most of the previous methods design different estimators ins... | arxiv:2308.06689 |
for any separated algebraic space $ x / s $ we construct a separated algebraic space $ \ gamma ^ d ( x / s ) $ - - the space of divided powers - - which parameterizes zero cycles of degree $ d $ on $ x $. the space of divided powers for an affine scheme is given by the spectrum of the algebra of divided powers. in char... | arxiv:0803.0618 |
a central problem in computational statistics is to convert a procedure for sampling combinatorial from an objects into a procedure for counting those objects, and vice versa. weconsider sampling problems coming from * gibbs distributions *, which are probability distributions of the form $ \ mu ^ \ omega _ \ beta ( \ ... | arxiv:1904.03139 |
distillation - based learning boosts the performance of the miniaturized neural network based on the hypothesis that the representation of a teacher model can be used as structured and relatively weak supervision, and thus would be easily learned by a miniaturized model. however, we find that the representation of a co... | arxiv:1904.09149 |
process - based hydrologic models are invaluable tools for understanding the terrestrial water cycle and addressing modern water resources problems. however, many hydrologic models are computationally expensive and, depending on the resolution and scale, simulations can take on the order of hours to days to complete. w... | arxiv:2407.20902 |
sampling rare events in metastable dynamical systems is often a computationally expensive task and one needs to resort to enhanced sampling methods such as importance sampling. since we can formulate the problem of finding optimal importance sampling controls as a stochastic optimization problem, this then brings addit... | arxiv:2206.06628 |
we study cosmology in the bigravity formulation of the drgt model where matter couples to both metrics. at linear order in perturbation theory two mass scales emerge : an hard one from the drgt potential, and an environmental dependent one from the coupling of bigravity with matter. at early time, the dynamics is dicta... | arxiv:1501.00864 |
within the context of traditional logarithmic grand unification at m _ gut = 10 ^ ( 16 ) gev, we show that it is nevertheless possible to observe certain gut states such as x and y gauge bosons at lower scales, perhaps even in the tev range. we refer to such states as ` ` gut precursors. ' ' such states offer an intere... | arxiv:hep-th/0210294 |
the formation and evolution of galaxies require large reservoirs of cold, neutral gas. the damped lya systems ( dlas ), seen in absorption towards distant quasars and gamma - ray bursts, are predicted to be the dominant reservoirs for this gas. detailed properties of dlas have been studied extensively for decades with ... | arxiv:1510.06206 |
the mott transition is observed experimentally in materials that are magnetically frustrated so that long - range order does not hide the mott transition at finite temperature. the hubbard model on the triangular lattice at half - filling is a paradigmatic model to study the interplay of interactions and frustration on... | arxiv:2207.08008 |
the article describes what constitutes chemical engineering and its branches are in plain language. it outlines what to expect when one enrolls in a chemical engineering program as an undergraduate or graduate student. this may include core subjects to take, skillset to master, and other essential expertise that might ... | arxiv:2203.01574 |
in this article, we study the kapustin - witten equations on a closed, simply - connected, four - dimensional manifold which were introduced by kapustin and witten. we use the taubes ' compactness theorem in arxiv : 1307. 6447v4 to prove that if $ ( a, \ phi ) $ is a smooth solution of kapustin - witten equations and t... | arxiv:1703.06584 |
cyclic dominance between species may yield spiral waves that are known to provide a mechanism enabling persistent species coexistence. this observation holds true even in presence of spatial heterogeneity in the form of quenched disorder. in this work we study the effects on spatio - temporal patterns and species coexi... | arxiv:1911.09268 |
the effects produced by the condensation of water vapours from the ambient in the various intricate nanoarchitectures occurring in the wing scales of several lepidoptera species were investigated by controlled cooling ( from room temperature to - 5 - - 10 { \ deg } c ) combined with in situ measurement of changes in th... | arxiv:1206.2749 |
self - induced flavor conversions of supernova ( sn ) neutrinos have been characterized in the spherically symmetric " bulb " model, reducing the neutrino evolution to a one dimensional problem along a radial direction. we lift this assumption, presenting a two - dimensional toy - model where neutrino beams are launche... | arxiv:1506.06805 |
constraints on the spin - averaged $ \ lambda p $ scattering length and effective range have been obtained from measurements of the $ pp \ to pk ^ + \ lambda $ reaction close to the production threshold by comparing model phase - space dalitz plot occupations with experimental ones. the data fix well the position of th... | arxiv:nucl-ex/9803008 |
in this article we carefully distinguish the notion of bi - refringence ( a polarization - dependent doubling in photon propagation speeds ) from that of bi - metricity ( where the two photon polarizations ` ` see ' ' two distinct metrics ). we emphasise that these notions are logically distinct, though there are speci... | arxiv:gr-qc/0204017 |
we analyse and explain the increased generalisation performance of iterate averaging using a gaussian process perturbation model between the true and batch risk surface on the high dimensional quadratic. we derive three phenomena \ latestedits { from our theoretical results : } ( 1 ) the importance of combining iterate... | arxiv:2003.01247 |
we consider a matrix model depending on a parameter $ \ lambda $ which permits the fuzzy sphere as a classical background. by expanding the bosonic matrices around this background ones recovers a u ( 1 ) ( u ( n ) ) noncommutative gauge theory on the fuzzy sphere. to check classical stability of this background, we loo... | arxiv:hep-th/0206075 |
we show that in d = 2n + 1 dimensions, when mass is negative and all angular momenta are non - vanishing, kerr and kerr - ads metrics describe smooth time machines, with no curvature singularity. turning off the angular momenta appropriately can lead to static ads solitons with negative mass. setting zero the cosmologi... | arxiv:1701.00006 |
the remarkable mechanical properties of high entropy alloys can be further improved by interstitial alloying. in this work we employ density functional theory calculations to study the solution energies of dilute carbon interstitial atoms in tetrahedral and octahedral sites in bcc hfnbtivzr. our results indicate that c... | arxiv:2010.01354 |
with increasing performance of actual qubit devices, even subtle effects in the interaction between qubits and environmental degrees of freedom become progressively relevant and experimentally visible. this applies particularly to the timescale separations that are at the basis of the most commonly used numerical simul... | arxiv:2308.06029 |
non - reciprocal transmission of motion is potentially highly beneficial to a wide range of applications, ranging from wave guiding, to shock and vibration damping and energy harvesting. to date, large levels of non - reciprocity have been realized using broken spatial or temporal symmetries, yet only in the vicinity o... | arxiv:1903.03807 |
drilling at grade, although this can be problematic with deep caissons, as unsupported excavations can collapse before the caisson form can be inserted. in this manner, the earth placed around the empty caisson form provides stability and strength, allowing concrete to be poured with fewer complications and with less r... | https://en.wikipedia.org/wiki/Caisson_(engineering) |
we study the elasticity of random stiff fiber networks. the elastic response of the fibers is characterized by a central force stretching stiffness as well as a bending stiffness that acts transverse to the fiber contour. previous studies have shown that this model displays an anomalous elastic regime where the stretch... | arxiv:0705.1425 |
we discuss the effect of the finite size of galaxies on estimating small - scale relative pairwise peculiar velocity dispersions from the cosmic virial theorem ( cvt ). specifically we evaluate the effect by incorporating the finite core radius $ r _ c $ in the two - point correlation function of mass, i. e. $ \ xi _ \... | arxiv:astro-ph/9609015 |
in this paper, we investigate multifield models in which the two - field bnrt model is coupled to a third field through mediator functions in the lagrangian density. to conduct the investigation, we obtain the equations of motion and develop a first - order formalism based on energy minimization. two possibilities are ... | arxiv:2310.07556 |
road crashes are the sixth leading cause of lost disability - adjusted life - years ( dalys ) worldwide. one major challenge in traffic safety research is the sparsity of crashes, which makes it difficult to achieve a fine - grain understanding of crash causations and predict future crash risk in a timely manner. hard ... | arxiv:2202.01934 |
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