Stochastic model for the dynamics of interacting Brownian particles

Details Stochastic model for the dynamics of interacting Brownian particles Stochastic model for the dynamics of interacting Brownian particles

2001-10-17

arxiv.org/abs/cond-mat/0110337v1

Physics

Condensed Matter

Soft Condensed Matter

latex file

Scientific paper

10.1016/S0378-4371(01)00617-3

Using the scheme of mesoscopic nonequilibrium thermodynamics, we construct the one- and two- particle Fokker-Planck equations for a system of interacting Brownian particles. By means of these equations we derive the corresponding balance equations. We obtain expressions for the heat flux and the pressure tensor which enable one to describe the kinetic and potential energy interchange of the particles with the heat bath. Through the momentum balance we analyze in particular the diffusion regime to obtain the collective diffusion coefficient in terms of the hydrodynamic and the effective forces acting on the Brownian particles.

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