Violation of the holographic bulk viscosity bound

Abstract

Motivated by gauge theory/string theory correspondence, a lower bound on the bulk viscosity of strongly coupled gauge theory plasma was proposed in arXiv:0708.3459. We consider strongly coupled N=4 supersymmetric Yang-Mills plasma compactified on a two-manifold of constant curvature beta. We show that the effective (1+1)-dimensional hydrodynamic description of the system is governed by the bulk viscosity violating the bound of arXiv:0708.3459, once beta<0.

17 pages, 3 figures

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• Compactified AdS black holes, Chamblin-Reall background, and their dual non-conformal relativistic fluids
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