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Dynamical properties of strongly interacting Brownian particles

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  • Ohtsuki, Toshiya

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.

Suggested Citation

  • Ohtsuki, Toshiya, 1982. "Dynamical properties of strongly interacting Brownian particles," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 110(3), pages 606-616.
    • Handle: RePEc:eee:phsmap:v:110:y:1982:i:3:p:606-616
    DOI: 10.1016/0378-4371(82)90072-3
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    Cited by:

    1. Manning, Gerald S. & Mohanty, Udayan, 1997. "Counterion condensation on ionic oligomers," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 247(1), pages 196-204.

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