Non-universal shear viscosity from Einstein gravity
High Energy Physics - Theory
2011-05-05 v2 High Energy Physics - Phenomenology
Fluid Dynamics
Abstract
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 form 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.
Cite
@article{arxiv.1011.5912,
title = {Non-universal shear viscosity from Einstein gravity},
author = {Johanna Erdmenger and Patrick Kerner and Hansjörg Zeller},
journal= {arXiv preprint arXiv:1011.5912},
year = {2011}
}
Comments
11 pages, 2 figures. v2: small corrections