Resolving disagreement for eta/s in a CFT plasma at finite coupling
By Alex Buchel. 2008
134 citations recorded by the source corpus.
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 η/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.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/d19e77998a51648610311f2c34b97f61998fc238
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Citations in the corpus
- Holographic studies of quasi-topological gravity (2010, background): “These calculations were soon after extended to include higher curvature corrections to Einstein gravity, the first of example being the computation of the leading corrections to η/s for the strongly coupled N = 4 super-Yang-Mills theory [5, 6, 8].”
- The Shear Viscosity to Entropy Ratio: A Status Report (2011, methodology): “the terms quartic in the curvature yield [34, 41] finite coupling corrections to η/s : η s = 1 4π [”
- Holographic Hydrodynamics with a Chemical Potential (2009, result): “We have verified that this approach reproduces the known results in the literature for theories containing four-curvature [8, 9] and two-curvature [12, 13] interactions.”