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Most technologically useful materials spanning multiple length scales are polycrystalline. Polycrystalline microstructures are composed of a myriad of small crystals or grains with different lattice orientations which are separated by…

偏微分方程分析 · 数学 2026-05-13 Batuhan Bayir , Yekaterina Epshteyn , William M Feldman

We study Brownian motion driven with both conservative and nonconservative external forces. By using the thermodynamic approach of the theory of Brownian motion we obtain the Fokker-Planck equation and derive expressions for the Fluctuation…

统计力学 · 物理学 2009-11-13 A. Perez-Madrid , I. Santamaria-Holek

Many technologically useful materials are polycrystals composed of small monocrystalline grains that are separated by grain boundaries of crystallites with different lattice orientations. The energetics and connectivities of the grain…

偏微分方程分析 · 数学 2021-06-29 Yekaterina Epshteyn , Chun Liu , Masashi Mizuno

This paper establishes the global well-posedness of the nonlinear Fokker-Planck equation for a noisy version of the Hegselmann-Krause model. The equation captures the mean-field behavior of a classic multiagent system for opinion dynamics.…

偏微分方程分析 · 数学 2015-10-23 Bernard Chazelle , Quansen Jiu , Qianxiao Li , Chu Wang

This paper concerns a Fokker-Planck equation on the positive real line modeling nucleation and growth of clusters. The main feature of the equation is the dependence of the driving vector field and boundary condition on a non-local order…

偏微分方程分析 · 数学 2020-06-04 Joseph G. Conlon , André Schlichting

Inspired by the modeling of grain growth in polycrystalline materials, we consider a nonlinear Fokker-Plank model, with inhomogeneous diffusion and with variable mobility parameters. We develop large time asymptotic analysis of such…

偏微分方程分析 · 数学 2022-06-24 Yekaterina Epshteyn , Chang Liu , Chun Liu , Masashi Mizuno

We characterize a stochastic dynamical system with tempered stable noise, by examining its probability density evolution. This probability density function satisfies a nonlocal Fokker-Planck equation. First, we prove a superposition…

动力系统 · 数学 2021-06-02 Li Lin , Jinqiao Duan , Xiao Wang , Yanjie Zhang

Gaussian white noise is frequently used to model fluctuations in physical systems. In Fokker-Planck theory, this leads to a vanishing probability density near the absorbing boundary of threshold models. Here we derive the boundary condition…

定量方法 · 定量生物学 2010-09-17 M. Helias , M. Deger , S. Rotter , M. Diesmann

The over-damped motion of a Brownian particle in an asymmetric, bistable, fluctuating potential shows noise induced stability: For intermediate fluctuation rates the mean occupancy of minima with an energy above the absolute minimum is…

统计力学 · 物理学 2009-10-31 Andreas Mielke

In this paper, we investigate the well-posedness of weak solutions to the time-fractional Fokker-Planck equation. Its dynamics is governed by anomalous diffusion, and we consider the most general case of space-time dependent forces.…

偏微分方程分析 · 数学 2023-08-01 Marvin Fritz

Nonlinear Fokker-Planck equations play a major role in modeling large systems of interacting particles with a proved effectiveness in describing real world phenomena ranging from classical fields such as fluids and plasma to social and…

数值分析 · 数学 2023-11-23 Giacomo Dimarco , Lorenzo Pareschi , Mattia Zanella

We study the well-posedness, steady states and long time behavior of solutions to Vlasov-Fokker-Planck equation with external confinement potential and nonlinear self-consistent interactions. Our analysis introduces newly characterized…

偏微分方程分析 · 数学 2024-08-30 Pierre Gervais , Maxime Herda

In this paper, we employ a Schauder-type estimate method, as developed in \cite{CHN}, to establish critical well-posedness result for the Fractional Fokker-Planck Equation. This equation serves as a fundamental model in kinetic theory and…

偏微分方程分析 · 数学 2025-01-28 Ke Chen , Ruilin Hu , Quoc-Hung Nguyen

A system of partial differential equations representing stochastic neural fields was recently proposed with the aim of modelling the activity of noisy grid cells when a mammal travels through physical space. The system was rigorously…

偏微分方程分析 · 数学 2023-07-18 José Antonio Carrillo , Pierre Roux , Susanne Solem

The existence and characterisation of noise-driven bifurcations from the spatially homogeneous stationary states of a nonlinear, non-local Fokker--Planck type partial differential equation describing stochastic neural fields is established.…

偏微分方程分析 · 数学 2023-04-26 José A. Carrillo , Pierre Roux , Susanne Solem

This paper focuses on the long-term behavior of solutions to nonlinear stochastic Fokker-Planck equations driven by common noise, where the drift term has a linear dependence on the measure. These equations, which describe the evolution of…

偏微分方程分析 · 数学 2025-03-07 Raphael Maillet

In many instances, the dynamical richness and complexity observed in natural phenomena can be related to stochastic drives influencing their temporal evolution. For example, random noise allied to spatial asymmetries may induce…

统计力学 · 物理学 2023-10-03 K. S. Fa , C. -L. Ho , Y. B. Matos , M. G. E da Luz

System-environment interactions are intrinsically nonlinear and dependent on the interplay between many degrees of freedom. The complexity may be even more pronounced when one aims to describe biologically motivated systems. In that case,…

统计力学 · 物理学 2014-07-07 L. A. da Silva , E. H. Colombo , C. Anteneodo

We study well-posedness and long time behavior of the nonlinear Vlasov-Poisson- Fokker-Planck system with an external confining potential. The system describes the time evolution of particles (e.g.$\,\,$in a plasma) undergoing diffusion,…

偏微分方程分析 · 数学 2024-06-24 Gayrat Toshpulatov

Stochastic reaction-diffusion equations are a popular modelling approach for studying interacting populations in a heterogeneous environment under the influence of environmental fluctuations. Although the theoretical basis of alternative…

种群与进化 · 定量生物学 2017-02-16 Ivo Siekmann , Michael Bengfort , Horst Malchow
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