Issue |
EPL
Volume 82, Number 6, June 2008
|
|
---|---|---|
Article Number | 65001 | |
Number of page(s) | 3 | |
Section | Physics of Gases, Plasmas and Electric Discharges | |
DOI | https://doi.org/10.1209/0295-5075/82/65001 | |
Published online | 04 June 2008 |
Ratio of viscosity to entropy density in a strongly coupled one-component plasma
Max-Planck-Institut für extraterrestrische Physik - P.O. Box 1312, 85741 Garching, Germany, EU
Corresponding author: thoma@mpe.mpg.de
Received:
31
March
2008
Accepted:
2
May
2008
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.
PACS: 52.27.Gr – Strongly-coupled plasmas
© EPLA, 2008
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