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Equation of long-range particle drift and diffusion on three-dimensional physical lattice is suggested. This equation can be considered as a lattice analogof space-fractional Fokker-Planck equation for continuum. The lattice approach gives…

统计力学 · 物理学 2015-03-13 Vasily E. Tarasov

Diffusion of particles in velocity space undergoing turbulent field was extensively studied in the problem of warm beam relaxation. Under low field intensities the diffusion is described by the Fokker-Planck equation with the diffusion…

等离子体物理 · 物理学 2007-05-23 Anatoly Zagorodny , Volodymyr Zasenko , Jan Weiland

This paper is devoted to $\phi$-entropies applied to Fokker-Planck and kinetic Fokker-Planck equations in the whole space, with confinement. The so-called $\phi$-entropies are Lyapunov functionals which typically interpolate between Gibbs…

偏微分方程分析 · 数学 2018-08-02 Jean Dolbeault , Xingyu Li

We analyze the escape of Brownian particles over potential barriers using the Fokker-Planck equation in a similar way to that of Chandrasekhar (Rev. Modern Phys., 1943), deriving a formula for the particle deposition velocity to a surface…

统计力学 · 物理学 2014-11-05 Michael W. Reeks

In this work we present new exact similarity solutions with moving boundaries of the Fokker-Planck equation having both time-dependent drift and diffusion coefficients.

数学物理 · 物理学 2015-06-05 C. -L. Ho

The new scheme of stochastic quantization is proposed. This quantization procedure is equivalent to the deformation of an algebra of observables in the manner of deformation quantization with an imaginary deformation parameter (the Planck…

高能物理 - 理论 · 物理学 2007-06-13 P. O. Kazinski

We have re-analyzed the dynamics of the thermal potential within Schwarzschild spacetime by employing the Fokker-Planck equation. We demonstrate that the Fokker-Planck equation reduces to a simplified form equivalent to a scaled quantum…

高能物理 - 理论 · 物理学 2025-06-06 Ojaswini Sharma , Aradhya Shukla

The method of using periodic approximations to compute the spectral decomposition of the Koop- man operator is generalized to the class of measure-preserving flows on compact metric spaces. It is shown that the spectral decomposition of the…

动力系统 · 数学 2018-06-28 Nithin Govindarajan , Ryan Mohr , Shivkumar Chandrasekaran , Igor Mezić

We consider Fokker-Planck equations with tilted periodic potential in the subcritical regime and characterize the spatio-temporal dynamics of the partial masses in the limit of vanishing diffusion. Our convergence proof relies on suitably…

偏微分方程分析 · 数学 2020-03-17 Michael Herrmann , Barbara Niethammer

We derive the Fokker-Planck equation on the parametric space. It is the Wasserstein gradient flow of relative entropy on the statistical manifold. We pull back the PDE to a finite dimensional ODE on parameter space. Some analytical example…

最优化与控制 · 数学 2020-06-16 Wuchen Li , Shu Liu , Hongyuan Zha , Haomin Zhou

We consider a particle living in $\mathbb{R}_+$, whose velocity is a positive recurrent diffusion with heavy-tailed invariant distribution when the particle lives in $(0,\infty)$. When it hits the boundary $x=0$, the particle restarts with…

概率论 · 数学 2023-10-24 Loïc Béthencourt

We classify (1+3)-dimensional Fokker-Planck equations with a constant diagonal diffusion matrix that are solvable by the method of separation of variables. As a result, we get possible forms of the drift coefficients $B_1(\vec x),B_2(\vec…

数学物理 · 物理学 2009-10-31 Alexander Zhalij

This paper is devoted to the rigorous derivation of the macroscopic limit of a Vlasov-Fokker-Planck equation in which the Laplacian is replaced by a fractional Laplacian. The evolution of the density is governed by a fractional heat…

偏微分方程分析 · 数学 2016-06-28 Pedro Aceves-Sanchez , Ludovic Cesbron

In this paper we identify the Fokker-Planck equation for (reflected) Sticky Brownian Motion as a Wasserstein gradient flow in the space of probability measures. The driving functional is the relative entropy with respect to a non-standard…

偏微分方程分析 · 数学 2025-01-27 Jean-Baptiste Casteras , Léonard Monsaingeon , Filippo Santambrogio

This paper investigates the gradient flow structure, well-posedness, and asymptotic behavior of the Fokker-Planck equation defined on locally uniformly finite graphs, which is highly non-trivial compared with the finite case. We first…

概率论 · 数学 2025-11-13 Cong Wang

We interpret a class of nonlinear Fokker-Planck equations with reaction as gradient flows over the space of Radon measures equipped with the recently introduced Hellinger-Kantorovich distance. The driving entropy of the gradient flow is not…

泛函分析 · 数学 2019-08-13 Stanislav Kondratyev , Dmitry Vorotnikov

We study the nonlinear Fokker-Planck equation on graphs, which is the gradient flow in the space of probability measures supported on the nodes with respect to the discrete Wasserstein metric. The energy functional driving the gradient flow…

动力系统 · 数学 2017-09-26 Shui-Nee Chow , Wuchen Li , Haomin Zhou

This paper is a short guideline to the decomposition of a compressible velocity into vortical and compressible structures using standard flow solvers. In particular, this is a fast solution to get an idea of the compressible fields inside…

流体动力学 · 物理学 2023-08-10 Stefan Schoder

We obtain the existence, uniqueness and regularity results for solutions to kinetic Fokker-Planck equations with bounded measurable coefficients in the presence of boundary conditions, including the inflow, diffuse reflection and specular…

偏微分方程分析 · 数学 2025-02-25 Yuzhe Zhu

We study the Fokker-Planck equation as the hydrodynamic limit of a stochastic particle system on one hand and as a Wasserstein gradient flow on the other. We write the rate functional, that characterizes the large deviations from the…

偏微分方程分析 · 数学 2012-03-29 Manh Hong Duong , Vaios Laschos , Michiel Renger