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A granular-matter model is exactly solved, where disks of two sizes and weights in alternating sequence are confined to a narrow channel. The axis of the channel is horizontal and its plane vertical. Disk sizes and channel width are such…

软凝聚态物质 · 物理学 2020-11-23 Dan Liu , Gerhard Müller

This paper investigates score-based diffusion models when the underlying target distribution is concentrated on or near low-dimensional manifolds within the higher-dimensional space in which they formally reside, a common characteristic of…

机器学习 · 计算机科学 2025-01-03 Gen Li , Yuling Yan

We consider consistent particle systems, which include independent random walkers, the symmetric exclusion and inclusion processes, as well as the dual of the KMP model. Consistent systems are such that the distribution obtained by first…

概率论 · 数学 2019-12-24 Gioia Carinci , Cristian Giardinà , Frank Redig

We study a one-dimensional particles system, in the overdamped limit, where nearest particles attract with a force inversely proportional to a power of their distance and coalesce upon encounter. The detailed shape of the distribution…

统计力学 · 物理学 2010-01-25 Daniel ben-Avraham , Oleksandr Gromenko , Paolo Politi

Power law or generalized polynomial regressions with unknown real-valued exponents and coefficients, and weakly dependent errors, are considered for observations over time, space or space--time. Consistency and asymptotic normality of…

统计理论 · 数学 2012-05-14 Peter M. Robinson

We review recent progress in analysing wave scattering in systems with both intrinsic chaos and/or disorder and internal losses, when the scattering matrix is no longer unitary. By mapping the problem onto a nonlinear supersymmetric…

介观与纳米尺度物理 · 物理学 2007-05-23 Y. V. Fyodorov , D. V. Savin , H. -J. Sommers

The energy landscape for soft sphere packings exists in a high-dimensional space and plays host to an astronomical number of local minima in a hierarchical and ultrametric arrangement. Each point in the landscape is a configuration that can…

软凝聚态物质 · 物理学 2025-09-04 Eddie Bautista , Eric I. Corwin

The use of non parametric hidden Markov models with finite state space is flourishing in practice while few theoretical guarantees are known in this framework. Here, we study asymptotic guarantees for these models in the Bayesian framework.…

统计理论 · 数学 2015-11-30 Elodie Vernet

We consider the preferential attachment model with location-based choice introduced by Haslegrave, Jordan and Yarrow as a model in which condensation phenomena can occur [Haslegrave et al. 2020]. In this model every vertex carries an…

概率论 · 数学 2024-05-09 Arne Grauer , Lukas Lüchtrath , Mark Yarrow

Condensation phenomena in particle systems typically occur as one of two distinct types: either as a spontaneous symmetry breaking in a homogeneous system, in which particle interactions enforce condensation in a randomly located site, or…

概率论 · 数学 2016-09-26 Cécile Mailler , Peter Mörters , Daniel Ueltschi

We formulate a statistical-mechanical description of a recently introduced random planting model in which plants are represented by growing hard disks. Seedlings of negligible size are introduced at random positions in a field, grow at a…

统计力学 · 物理学 2026-02-17 Julian Talbot

Jammed packings' mechanical properties depend sensitively on their detailed local structure. Here we provide a complete characterization of the pair correlation close to contact and of the force distribution of jammed frictionless spheres.…

统计力学 · 物理学 2012-11-15 Patrick Charbonneau , Eric I. Corwin , Giorgio Parisi , Francesco Zamponi

We prove a sequence of limiting results about weakly dependent stationary and regularly varying stochastic processes in discrete time. After deducing the limiting distribution for individual clusters of extremes, we present a new type of…

概率论 · 数学 2017-12-05 Bojan Basrak , Hrvoje Planinic , Philippe Soulier

Consider a symmetrical conflict relationship between the points of a point process. The Mat\'ern type constructions provide a generic way of selecting a subset of this point process which is conflict-free. The simplest one consists in…

概率论 · 数学 2013-11-21 Tien Viet Nguyen , François Baccelli

We present and analyze mechanisms for the patterned deposition of particles in a spatio-temporally driven lattice. The working principle is based on the breaking of the spatio-temporal translation symmetry, which is responsible for the…

混沌动力学 · 物理学 2013-11-06 Benno Liebchen , Christoph Petri , Florian Lenz , Peter Schmelcher

We propose the Plaid Atoms Model (PAM), a novel Bayesian nonparametric model for grouped data. Founded on an idea of `atom skipping', PAM is part of a well-established category of models that generate dependent random distributions and…

统计方法学 · 统计学 2024-01-02 Dehua Bi , Yuan Ji

Analytical study of the distribution of phase of the transmission coefficient through 1D disordered absorbing system is presented. The phase is shown to obey approximately Gaussian distribution. An explicit expression for the variance is…

无序系统与神经网络 · 物理学 2009-10-28 V. Freilikher , M. Pustilnik

The high-pressure compaction of three dimensional granular packings is simulated using a bonded particle model (BPM) to capture linear elastic deformation. In the model, grains are represented by a collection of point particles connected by…

软凝聚态物质 · 物理学 2023-10-19 Joel T. Clemmer , Joseph M. Monti , Jeremy B. Lechman

Despite the remarkable empirical success of score-based diffusion models, their statistical guarantees remain underdeveloped. Existing analyses often provide pessimistic convergence rates that do not reflect the intrinsic low-dimensional…

机器学习 · 统计学 2026-04-24 Saptarshi Chakraborty , Quentin Berthet , Peter L. Bartlett

We study an inhomogeneous sparse random graph on [N] = {1, . . . , N } as introduced in a seminal paper by Bollobas, Janson and Riordan (2007): vertices have a type (here in a compact metric space S), and edges between different vertices…