Resolving disagreement for eta/s in a CFT plasma at finite coupling
High Energy Physics - Theory
2008-11-26 v1
Abstract
The ratio of shear viscosity to entropy density in a strongly coupled CFT plasma can be computed using the AdS/CFT correspondence either from equilibrium correlation functions or from the Janik-Peschanski dual of the boost invariant plasma expansion. We point out that the previously found disagreement for eta/s at finite t' Hooft coupling is resolved once the incoming-wave boundary condition for metric fluctuations at the horizon of the dual geometry is properly imposed.
Cite
@article{arxiv.0805.2683,
title = {Resolving disagreement for eta/s in a CFT plasma at finite coupling},
author = {Alex Buchel},
journal= {arXiv preprint arXiv:0805.2683},
year = {2008}
}
Comments
7 pages