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We obtain large and moderate deviation estimates, as well as concentration inequalities, for a class of nonuniformly expanding maps with stretched exponential decay of correlations. In the large deviation regime, we also exhibit examples…

概率论 · 数学 2022-01-26 C Cuny , J Dedecker , F Merlevède

Effective and fast convergence toward an equilibrium state for long-chain polymer melts is realized by a hybrid method coupling molecular dynamics and the elastic continuum. The required simulation time to achieve the equilibrium state is…

材料科学 · 物理学 2012-10-23 Yasuhiro Senda , Miyuki Fujio , Shuji Shimamura , Janne Blomqvist , Risto M Nieminen

We establish precise bounds on cumulants for a rather general class of non-linear geometric functionals satisfying the stabilization property under a simple, stationary (marked) point process admitting fast decay of its correlation…

概率论 · 数学 2020-04-07 Marcel Fenzl

The evolution of observable quantities of finite quantum systems is analyzed when the latter are subject to nondestructive measurements. The type and number of measurements characterize the level of decoherence produced in the system. A…

量子物理 · 物理学 2015-06-04 V. I. Yukalov

Quantum dissipation is studied for a discrete system that linearly interacts with a reservoir of harmonic oscillators at thermal equilibrium. Initial correlations between system and reservoir are assumed to be absent. The dissipative…

量子物理 · 物理学 2018-08-14 A. J. van Wonderen , L. G. Suttorp

We study the large time behaviour of the mass (size) of particles described by the fragmentation equation with homogeneous breakup kernel. We give necessary and sufficient conditions for the convergence of solutions to the unique…

偏微分方程分析 · 数学 2018-11-20 Weronika Biedrzycka , Marta Tyran-Kaminska

The well-posedness and regularity properties of diffusion-aggregation equations, emerging from interacting particle systems, are established on the whole space for bounded interaction force kernels by utilizing a compactness convergence…

偏微分方程分析 · 数学 2024-06-19 Li Chen , Paul Nikolaev , David J. Prömel

Inertial particles suspended in many natural and industrial flows undergo coagulation upon collisions and fragmentation if their size becomes too large or if they experience large shear. Here we study this coagulation-fragmentation process…

混沌动力学 · 物理学 2009-08-20 Jens C. Zahnow , Rafael D. Vilela , Ulrike Feudel , Tamás Tél

Continuous-time Markov chains associated to finite-volume discretization schemes of Fokker-Planck equations are constructed. Sufficient conditions under which quantitative exponential decay in the $\phi$-entropy and Wasserstein distance are…

概率论 · 数学 2025-11-12 Ansgar Jüngel , Katharina Schuh

A nonlinear master equation is derived, reflecting properly the entropy of open quantum systems. In contrast to linear alternatives, its equilibrium solution is exactly the canonical Gibbs density matrix. The corresponding nonlinear…

量子物理 · 物理学 2021-02-08 Roumen Tsekov

We introduce a reversible Markovian coagulation-fragmentation process on the set of partitions of $\{1,\ldots,L\}$ into disjoint intervals. Each interval can either split or merge with one of its two neighbors. The invariant measure can be…

概率论 · 数学 2013-11-27 Cedric Bernardin , Fabio Lucio Toninelli

Convection-diffusion-reaction equations are a class of second-order partial differential equations widely used to model phenomena involving the change of concentration/population of one or more substances/species distributed in space.…

We take into account a coagulation model that simulates a distinct kind of dynamics. In this model, two particles collide to produce a single particle, but the resulting particle decreases in size, allowing each particle to be fully…

经典分析与常微分方程 · 数学 2023-07-06 Pratibha Verma , Ankik Kumar Giri

Shrinkage of large particles, either through depolymerisation (i.e. progressive shortening) or through fragmentation (breakage into smaller pieces) may be modelled by discrete equations, of Becker-D\''oring type, or by continuous ones. In…

偏微分方程分析 · 数学 2024-07-08 Marie Doumic

We analyze semilinear reaction-diffusion systems that are mass controlled, and have nonlinearities that satisfy critical growth rates. The systems under consideration are only assumed to satisfy natural assumptions, namely the preservation…

偏微分方程分析 · 数学 2023-05-04 Chunyou Sun , Bao Quoc Tang , Juan Yang

We prove the approach to equilibrium of quenched isolated quantum systems for which the change in the Hamiltonian brought about by the quench satisfies a certain closed commutator algebra with all the extensive integrals of motion of the…

统计力学 · 物理学 2016-12-01 E. Solano-Carrillo

A finite-volume scheme for a cross-diffusion model arising from the mean-field limit of an interacting particle system for multiple population species is studied. The existence of discrete solutions and a discrete entropy production…

数值分析 · 数学 2019-11-27 Ansgar Jüngel , Antoine Zurek

Using the formalism of rigorous statistical mechanics, we study the phenomena of phase separation and freezing-point depression upon freezing of solutions. Specifically, we devise an Ising-based model of a solvent-solute system and show…

数学物理 · 物理学 2007-05-23 Kenneth Alexander , Marek Biskup , Lincoln Chayes

In this work, we study a $3\times 3$ triangular reaction-diffusion system. Our main objective is to understand the long time behaviour of solutions to this reaction-diffusion system when there are degeneracies. More precisely, we treat…

偏微分方程分析 · 数学 2024-09-20 Saumyajit Das , Harsha Hutridurga

We examine some aspects of the recent results by K. Binder. The equilibrium formation/dissolution of droplets in finite systems is discussed in the context of the canonical and the grand canonical distributions.

统计力学 · 物理学 2009-11-10 Marek Biskup , Lincoln Chayes , Roman Kotecky