Computer Simulations of charged systems

Details Computer Simulations of charged systems Computer Simulations of charged systems

2002-03-26

arxiv.org/abs/cond-mat/0203541v1

in "Electrostatic Effects in Soft Matter and Biophysics", eds. C. Holm, P. K'ekicheff, and R. Podgornik, NATO Science Series I

Physics

Condensed Matter

Soft Condensed Matter

32 pages, 10 figures, uses crckapb.sty (included)

Scientific paper

In this brief contribution to the Proceedings of the NATO-ASI on ``Electrostatic Effects in Soft Matter and Biophysics'', which took place in Les Houches from Oct. 1-13, 2000, we summarize in short aspects of the simulations methods to study charged systems. After describing some basics of Monte Carlo and Molecular dynamics techniques, we describe a few methods to compute long range interactions in periodic systems. After a brief detour to mean-field models, we describe our results obtained for flexible polyelectrolytes in good and bad solvents. We follow with a description of the inhomogeneity of the counterion distribution around finite chains, and continue then with infinitely long, rodlike systems. The last part is devoted to the phenomenon of overcharging for colloidal particles and its explanation in terms of simple electrostatic arguments.

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