Mean field approach for diffusion of interacting particles

Abstract

A nonlinear Fokker-Planck equation is obtained in the continuous limit of a one-dimensional lattice with an energy landscape of wells and barriers. Interaction is possible among particles in the same energy well. A parameter $\gamma$, related to the barrier's heights, is introduced. Its value is determinant for the functional dependence of the mobility and diffusion coefficient on particle concentration, but has no influence on the equilibrium solution. A relation between the mean field potential and the microscopic interaction energy is derived. The results are illustrated with classical particles with interactions that reproduce fermion and boson statistics.

References in corpus (5)

• Non equilibrium steady states: fluctuations and large deviations of the density and of the current
• Generalized Exclusion Processes: Transport Coefficients
• Diffusion of interacting particles in discrete geometries
• On the transport of interacting particles in a chain of cavities: Description through a modified Fick-Jacobs equation
• Evolution equation for tagged particle density and correlations in single file diffusion

Cited by in corpus (6)

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• Out-of-equilibrium Monte Carlo simulations of a classical gas with Bose-Einstein statistics