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The grain size distribution (GSD) plays an important role in the mechanical properties of amorphous disordered systems and complex granular materials. Varying GSD causes segregation issues and alters critical behaviors. This work used the…

软凝聚态物质 · 物理学 2025-10-17 Teng Man , Yimin Lu , Zhongrong Wang , Herbert Huppert , Alessio Zaccone , Honglei Sun

We investigate experimentally within a two-dimensional cell the distribution of the free volume associated either to single grains or to clusters of grains. Our main result is that the logarithm of the probability to find a free volume per…

软凝聚态物质 · 物理学 2007-05-23 F. da Cruz , F. Lechenault , O. Dauchot , E. Bertin

Although consistency is a minimum requirement of any estimator, little is known about consistency of the mean partition approach in consensus clustering. This contribution studies the asymptotic behavior of mean partitions. We show that…

机器学习 · 计算机科学 2015-12-21 Brijnesh Jain

The effect of space distribution of randomly-placed particles in a representative composite volume on the thermoelastic effective properties and local stress and strain distribution is analyzed. Quantitative assessment is performed using…

软凝聚态物质 · 物理学 2026-05-13 Pawel Holobut , Michal Majewski , Katarzyna Kowalczyk-Gajewska

Bayesian and frequentist criteria fundamentally differ, but often posterior and sampling distributions agree asymptotically (e.g., Gaussian with same covariance). For the corresponding single-draw experiment, we characterize the frequentist…

统计理论 · 数学 2024-07-04 David M. Kaplan , Longhao Zhuo

We develop a method for computing the free-energy of a canonical ensemble of quantum fields near the horizon of a rotating black hole. We show that the density of energy levels of a quantum field on a stationary background can be related to…

广义相对论与量子宇宙学 · 物理学 2010-11-19 V. Frolov , D. Fursaev

Three-dimensional discrete numerical simulation is used to investigate the properties of close-packed frictionless granular assemblies as a function of particle polydispersity and shape. Unlike some experimental results, simulations show…

软凝聚态物质 · 物理学 2017-07-20 Jean-François Camenen , Yannick Descantes

We investigate the full phase diagram of a column of grains near jamming, as a function of varying levels of frustration. Frustration is modelled by the effect of two opposing fields on a grain, due respectively to grains above and below…

统计力学 · 物理学 2010-11-15 J. M. Luck , A. Mehta

Cosmic voids are a promising environment to characterize neutrino-induced effects on the large-scale distribution of matter in the universe. We perform a comprehensive numerical study of the statistical properties of voids, identified both…

宇宙学与河外天体物理 · 物理学 2015-11-18 Elena Massara , Francisco Villaescusa-Navarro , Matteo Viel , P. M. Sutter

We present exact and asymptotic results for clusters in the one-dimensional totally asymmetric exclusion process (TASEP) with two different dynamics. The expected length of the largest cluster is shown to diverge logarithmically with…

统计力学 · 物理学 2009-11-07 O. Pulkkinen , J. Merikoski

Whether or not the initial star cluster mass function is established through a universal, galactocentric-distance-independent stochastic process, on the scales of individual galaxies, remains an unsolved problem. This debate has recently…

星系天体物理 · 物理学 2016-01-20 Weijia Sun , Richard de Grijs , Zhou Fan , Ewan Cameron

An asymmetric exclusion model on an open chain with random rates for hopping particles, where overtaking is also possible, is studied numerically and by computer simulation. The phase structure of the model and the density profiles near the…

统计力学 · 物理学 2007-05-23 A. Tonddast-Navaei , V. Karimipour , M. R. Ejtehadi

We study diffusion of particles in large-scale simulations of one-dimensional stochastic sandpiles, in both the restricted and unrestricted versions. The results indicate that the diffusion constant scales in the same manner as the activity…

统计力学 · 物理学 2015-05-13 S. D. da Cunha , Ronaldo R. Vidigal , L. R. da Silva , Ronald Dickman

We study theoretically in the present work the self-assembly of molecules in an open system, which is fed by monomers and depleted in partial or complete clusters. Such a scenario is likely to occur for example in the context of viral…

生物物理 · 物理学 2014-02-18 Martin Castelnovo , Timothée Verdier , Lionel Foret

We study the effect of grain polydispersity on the bulk modulus in non-cohesive two dimensional granular solids. Molecular dynamics simulations in two dimensions are used to describe polydisperse samples that reach a stationary limit after…

软凝聚态物质 · 物理学 2024-11-06 Juan C. Petit , Ernesto Medina

As one of the most powerful probes of cosmological structure formation, the abundance of massive galaxy clusters is a sensitive probe of modifications to gravity on cosmological scales. In this paper, we present results from N-body…

宇宙学与河外天体物理 · 物理学 2015-03-17 Simone Ferraro , Fabian Schmidt , Wayne Hu

I present three models of plant--pathogen interactions. The models are stochastic and spatially explicit at the scale of individual plants. For each model, I use a version of pair approximation or moment closure along with a separation of…

数值分析 · 数学 2025-10-20 David H. Brown

We investigate the non-gaussian properties of cosmic-string-seeded linear density perturbations with cold and hot dark matter backgrounds, using high-resolution numerical simulations. We compute the one-point probability density function of…

天体物理学 · 物理学 2009-10-30 P. P. Avelino , E. P. S. Shellard , J. H. P. Wu , B. Allen

Volume-fraction expressions are obtained for the systems of an infinite number of parallel planes arranged both regularly and randomly. As a special case of random arrangement, a non-Poissonian point process (the second-order Erlang…

材料科学 · 物理学 2021-06-10 Nikolay V. Alekseechkin

In this paper we study the asymptotic behaviour via Gamma-convergence of some integral functionals which model some multi-dimensional structures and depend explicitly on the linearized strain tensor. The functionals are defined in…

泛函分析 · 数学 2007-05-23 Nadia Ansini , Francois Bille Ebobisse