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arxiv: hep-th/0506184 · v2 · submitted 2005-06-22 · ✦ hep-th · gr-qc· hep-ph

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Quasinormal modes and holography

Pavel K. Kovtun , Andrei O. Starinets
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classification ✦ hep-th gr-qchep-ph
keywords quasinormalboundaryconditionfinitefunctionsmodespolestemperature
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Quasinormal frequencies of electromagnetic and gravitational perturbations in asymptotically AdS spacetime can be identified with poles of the corresponding real-time Green's functions in a holographically dual finite temperature field theory. The quasinormal modes are defined for gauge-invariant quantities which obey incoming-wave boundary condition at the horizon and Dirichlet condition at the boundary. As an application, we explicitly find poles of retarded correlation functions of R-symmetry currents and the energy-momentum tensor in strongly coupled finite temperature N=4 supersymmetric SU(Nc) Yang-Mills theory in the limit of large Nc.

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