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Title: The viscosity to entropy ratio: From string theory motivated bounds to warm dense matter

Journal Article · · High Energy Density Physics
 [1];  [2];  [3]
  1. CEA, DAM, DIF, Arpajon (France)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. di Padova, Padova (Italy); DEMOCRITOS National Simulation Center, Trieste (Italy)
+ Show Author Affiliations

Here, we study the ratio of viscosity to entropy density in Yukawa one-component plasmas as a function of coupling parameter at fixed screening, and in realistic warm dense matter models as a function of temperature at fixed density. In these two situations, the ratio is minimized for values of the coupling parameters that depend on screening, and for temperatures that in turn depend on density and material. In this context, we also examine Rosenfeld arguments relating transport coefficients to excess reduced entropy for Yukawa one-component plasmas. For these cases we show that this ratio is always above the lower-bound conjecture derived from string theory ideas.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1249122
Report Number(s):
LLNL-JRNL-655596
Journal Information:
High Energy Density Physics, Vol. 12, Issue C; ISSN 1574-1818
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Cited By (2)

A viscous quantum hydrodynamics model based on dynamic density functional theory journal November 2017
Perspective: Excess-entropy scaling journal December 2018

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
viscosity
entropy density
Yukawa one-component plasmas
warm dense matter