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This article studies a Fokker-Planck type equation of fractional diffusion with conservative drift $\partial$f/$\partial$t = $\Delta$^($\alpha$/2) f + div(Ef), where $\Delta$^($\alpha$/2) denotes the fractional Laplacian and E is a…

偏微分方程分析 · 数学 2020-01-22 Laurent Lafleche

Real ecosystems are characterized by sparse and asymmetric interactions, posing a major challenge to theoretical analysis. We introduce a new method to study the generalized Lotka-Volterra model with stochastic dynamics on sparse graphs. By…

种群与进化 · 定量生物学 2026-05-05 David Machado , Pietro Valigi , Tommaso Tonolo , Maria Chiara Angelini

We develop a functional analytic approach to the study of the Kramers and kinetic Fokker-Planck equations which parallels the classical $H^1$ theory of uniformly elliptic equations. In particular, we identify a function space analogous to…

偏微分方程分析 · 数学 2024-07-24 D. Albritton , S. Armstrong , J. -C. Mourrat , M. Novack

In this paper, we study the Gevrey regularity of weak solution for a class of linear and quasilinear Fokker-Planck equations.

偏微分方程分析 · 数学 2009-11-21 Hua Chen , Wei-Xi Li , Chao-Jiang Xu

In this paper, we propose two approaches to derive the discrete Poincar\'e inequality for the B-schemes, a family of finite volume discretization schemes, for the one-dimensional Fokker-Planck equation in full space. We study the properties…

数值分析 · 数学 2025-07-08 Lei Li , Jian-Guo Liu , Zhen Wang

A pointlike particle of finite mass m, moving in a one-dimensional viscous environment and biased by a spatially dependent force, is considered. We present a rigorous mapping of the Fokker-Planck equation, which determines evolution of the…

统计力学 · 物理学 2012-09-24 Pavol Kalinay , Jerome K. Percus

We study the Fokker-Planck equation derived in the large system limit of the Markovian process describing the dynamics of quantitative traits. The Fokker-Planck equation is posed on a bounded domain and its transport and diffusion…

偏微分方程分析 · 数学 2018-08-01 Katarina Bodova , Jan Haskovec , Peter Markowich

In this paper the author analyses the weighted Renyi entropy in order to derive several inequalities in weighted case. Furthermore, using the proposed notions $\alpha$-th generalized derivation and ($\alpha$; p)-th weighted Fisher…

信息论 · 计算机科学 2015-10-16 Salimeh Yasaei Sekeh

This paper is concerned with the Fokker-Planck (FP) description of classical stochastic systems with discrete time delay. The non-Markovian character of the corresponding Langevin dynamics naturally leads to a coupled infinite hierarchy of…

统计力学 · 物理学 2018-07-03 Sarah A. M. Loos , Sabine H. L. Klapp

We consider a class of nonlinear Fokker-Planck equations describing the dynamics of an infinite population of units within mean-field interaction. Relying on a slow-fast viewpoint and on the theory of approximately invariant manifolds we…

偏微分方程分析 · 数学 2021-07-07 Eric Luçon , Christophe Poquet

We derive the generalized Fokker-Planck equation associated with the Langevin equation (in the Ito sense) for an overdamped particle in an external potential driven by multiplicative noise with an arbitrary distribution of the increments of…

统计力学 · 物理学 2009-04-29 S. I. Denisov , Werner Horsthemke , Peter Hänggi

We investigate the behavior of the solutions of a class of certain strictly hyperbolic equations defined on $[0,T]\times \R^n$ in relation to a class of metrics on the phase space. In particular, we study the global regularity and decay…

偏微分方程分析 · 数学 2021-03-04 Rahul Raju Pattar , N. Uday Kiran

We get fractional symmetric Fokker - Planck and Einstein - Smoluchowski kinetic equations, which describe evolution of the systems influenced by stochastic forces distributed with stable probability laws. These equations generalize known…

统计力学 · 物理学 2009-10-31 A. V. Chechkin , V. Yu. Gonchar

In this work, we study a class of nonlocal-in-time kinetic models of incompressible dilute polymeric fluids. The system couples a macroscopic balance of linear momentum equation with a mezoscopic subdiffusive Fokker-Planck equation…

偏微分方程分析 · 数学 2025-11-11 Marvin Fritz , Endre Süli , Barbara Wohlmuth

We establish a dimension-free improvement of Talagrand's Gaussian transport-entropy inequality, under the assumption that the measures satisfy a Poincar\'e inequality. We also study stability of the inequality, in terms of relative entropy,…

概率论 · 数学 2021-04-27 Dan Mikulincer

Using operator methods, we generally present the level densities for kinds of random matrix unitary ensembles in weak sense. As a corollary, the limit spectral distributions of random matrices from Gaussian, Laguerre and Jacobi unitary…

数学物理 · 物理学 2007-05-23 Zhengdong Wang , Kuihua Yan

Relaxation according to Fokker-Planck equations is a standard scenario in classical statistical mechanics. It is however not obvious how such an equilibration may emerge within a closed, finite quantum system. We present an analytical and…

量子物理 · 物理学 2015-06-12 Hendrik Niemeyer , Daniel Schmidke , Jochen Gemmer

Extending the thoroughly studied theory of group stability, we study Ulam stability type problems for associative and Lie algebras; namely, we investigate obstacles to rank-approximation of almost solutions by exact solutions for systems of…

环与代数 · 数学 2025-07-11 Tomer Bauer , Guy Blachar , Be'eri Greenfeld

In this contribution we show that a suitably defined nonequilibrium entropy of an N-body isolated system is not a constant of the motion in general and its variation is bounded, the bounds determined by the thermodynamic entropy, i.e., the…

统计力学 · 物理学 2009-11-13 A. Perez-Madrid

A (2+1)-dimensional linear ultra-parabolic Fokker--Planck--Kolmogorov equation is investigated from the group-theoretical point of view. By using the Berest--Aksenov approach, an algebra of invariance of fundamental solutions of the…

数学物理 · 物理学 2014-08-04 Sergii Kovalenko , Valeriy Stogniy , Maksym Tertychnyi