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arXiv · 1609.06541

Mean-field beyond mean-field: the single particle view for moderately to strongly coupled charged fluids

L. Samaj·A. P. dos Santos·Y. Levin·E. Trizac
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Abstract

In a counter-ion only charged fluid, Coulomb coupling is quantified by a single dimensionless parameter. Yet, the theoretical treatment of moderately to strongly coupled charged fluids is a difficult task, central to the understanding of a wealth of soft matter problems, including biological systems. We show that the corresponding coupling regime can be remarkably well described by a single particle treatment, which, at variance with previous works, takes due account of inter-ionic interactions. To this end, the prototypical problem of a planar charged dielectric interface is worked out. Testing our predictions against Monte Carlo simulation data reveals an excellent agreement.

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L. Samaj, A. P. dos Santos, Y. Levin, E. Trizac. 2016-09-21. Mean-field beyond mean-field: the single particle view for moderately to strongly coupled charged fluids. https://arxiv.org/abs/1609.06541

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