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

页码：301 / 304

页数：4