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

被引：5
|
作者：
Faussurier, G. [1 ]
Libby, S. B. [2 ]
Silvestrelli, P. L. [3 ,4 ]
机构：
[1] CEA, DAM, DIF, F-91297 Arpajon, France
[2] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA
[3] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy
[4] CNR, Ist Officina Mat, DEMOCRITOS Natl Simulat Ctr, Trieste, Italy
来源：
HIGH ENERGY DENSITY PHYSICS | 2014年 / 12卷
关键词：
Viscosity; Entropy density; Yukawa one-component plasmas; Warm dense matter; ONE-COMPONENT-PLASMA; COUPLED YUKAWA SYSTEMS; SHEAR VISCOSITY; SIMPLE FLUIDS; SIMULATIONS; HYDROGEN; THERMODYNAMICS; EQUATION; LIQUID; STATES;
D O I：
10.1016/j.hedp.2014.06.001
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：21 / 26
页数：6
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