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Quasinormal spectrum and the black hole membrane paradigm

Starinets, Andrei (2009) Quasinormal spectrum and the black hole membrane paradigm Physics Letters B, 670, (4-5), pp. 442-445. (doi:10.1016/j.physletb.2008.11.028).

Record type: Article


The membrane paradigm approach to black hole physics introduces the notion of a stretched horizon as a fictitious time-like surface endowed with physical characteristics such as entropy, viscosity and electrical conductivity. We show that certain properties of the stretched horizons are encoded in the quasinormal spectrum of black holes. We compute analytically the lowest quasinormal frequency of a vector-type perturbation for a generic black hole with a translationally invariant horizon (black brane) in terms of the background metric components. The resulting dispersion relation is identical to the one obtained in the membrane paradigm treatment of the diffusion on stretched horizons. Combined with the Buchel–Liu universality theorem for the membrane's diffusion coefficient, our result means that in the long wavelength limit the black brane spectrum of gravitational perturbations exhibits a universal, purely imaginary quasinormal frequency. In the context of gauge–gravity duality, this provides yet another (third) proof of the universality of shear viscosity to entropy density ratio in theories with gravity duals.

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Published date: 5 January 2009
Additional Information: Author: --> A. O. Starinets
Keywords: gauge/gravity duality, quasinormal spectrum, thermal field theory, black branes


Local EPrints ID: 57608
ISSN: 0370-2693
PURE UUID: 0fad2918-95c6-4323-b9f2-98b4786db549

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Date deposited: 07 Aug 2008
Last modified: 17 Jul 2017 14:29

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Author: Andrei Starinets

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