Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-07-09
Phys.Rev.D78:066010,2008
Physics
High Energy Physics
High Energy Physics - Theory
8 pages, ReVTeX4
Scientific paper
10.1103/PhysRevD.78.066010
We obtain the relaxation time for the shear viscous stress for various geometries using the "membrane paradigm" formula proposed recently. We consider the generic Schwarzschild-AdS black holes (SAdS), the generic Dp-brane, the Klebanov-Tseytlin (KT) geometry, and the N=2* theory. The formula is the "shear mode" result and is not fully trustable, but it may be helpful to learn some generic behaviors about the relaxation time. For example, a simple formula summarizes all known results for SAdS, and a single expression summarizes the results for the Dp-brane and the KT geometry.
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