Non-universal shear viscosity from Einstein gravity

被引：72
|
作者：
Erdmenger, Johanna [1 ]
Kerner, Patrick [1 ]
Zeller, Hansjoerg [1 ]
机构：
[1] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
来源：
PHYSICS LETTERS B | 2011年 / 699卷 / 04期
关键词：
Gauge/gravity duality; Finite-temperature field theory; PLASMA;
D O I：
10.1016/j.physletb.2011.04.009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A very famous result of gauge/gravity duality is the universality of the ratio of shear viscosity to entropy density in every field theory holographically dual to classical, two-derivative (Einstein) gravity. We present a way to obtain deviation from this universality by breaking the rotational symmetry spontaneously. In anisotropic fluids additional shear modes exist and their corresponding shear viscosities may be non-universal. We confirm this by explicitly calculating the shear viscosities in a transversely isotropic background, a p-wave superfluid, and study its critical behavior. This is a first decisive step towards further applications of gauge/gravity duality to physical systems. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：301 / 304
页数：4
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