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arXiv · 0803.4407

Ratio of viscosity to entropy density in a strongly coupled one-component plasma

Markus H. Thoma·Gregor E. Morfill
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Abstract

String theoretical arguments led to the hypothesis that the ratio of viscosity to entropy of any physical system has a lower bound. Strongly coupled systems usually have a small viscosity compared to weakly coupled plasmas in which the viscosity is proportional to the mean free path. In the case of a one-component plasma the viscosity as a function of the coupling strength shows a minimum. Here we show that the ratio of viscosity to entropy of a strongly coupled one-component plasma is always above the lower bound predicted by string theory.

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Markus H. Thoma, Gregor E. Morfill. 2008-05-05. Ratio of viscosity to entropy density in a strongly coupled one-component plasma. https://doi.org/10.1209/0295-5075/82/65001

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