Dynamical properties of strongly interacting Brownian particles

Toshiya Ohtsuki

Physica A: Statistical Mechanics and its Applications, 1982, vol. 110, issue 3, 606-616

Abstract: The self-diffusion process of Brownian particles is theoretically investigated for concentrated systems in the presence of strong potential interactions between particles. Starting from an N-particle diffusion equation, a formalism is developed to calculate the self-diffusion coefficient and the velocity autocorrelation function on the basis of the superposition approximation for the three-particle distribution function of non-equilibrium states. Explicit calculations are carried out for model systems of hard spheres with a screened Coulomb potential. Calculated time-dependent self-diffusion coefficients are compared with available data of the Brownian dynamics. Without introducing any phenomenological or adjustable parameters, quantitative agreement is achieved.

Date: 1982
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:110:y:1982:i:3:p:606-616

DOI: 10.1016/0378-4371(82)90072-3

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