Resolving disagreement for eta/s in a CFT plasma at finite coupling

Details Resolving disagreement for eta/s in a CFT plasma at finite coupling Resolving disagreement for eta/s in a CFT plasma at finite coupling

2008-05-17

arxiv.org/abs/0805.2683v1

Nucl.Phys.B803:166-170,2008

Physics

High Energy Physics

High Energy Physics - Theory

7 pages

Scientific paper

10.1016/j.nuclphysb.2008.05.024

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.

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