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Quasinormal modes of black holes: from astrophysics to string theory

Author: R. A. Konoplya, A. Zhidenko
Url: http://arxiv.org/abs/1102.4014
Format: Ps, Pdf
Year: 2011
Category: Black holes
Pages: 49
Clicks: 794

Abstract: Perturbations of black holes, initially considered in the context of possible observations of astrophysical effects, have been intensively studied for the past ten years in string theory, brane-world models and quantum gravity. Through the famous gauge/gravity duality, proper oscillations of perturbed black holes, called quasinormal modes (QNMs), allow for the description of the hydrodynamic regime in the dual finite temperature field theory at strong coupling, which can be used to predict the behavior of quark-gluon plasmas in the non-perturbative regime. On the other hand, the brane-world scenarios assume the existence of extra-dimensions in nature, so that multidimensional black holes might be formed in a laboratory experiment. All this stimulated active research in the field of perturbations of higher dimensional black holes and branes during recent years. In this review we discuss recent achievements on various aspects of black hole perturbations such as decoupling of variables in the perturbation equations, quasinormal modes (with special emphasis on various numerical and analytical methods of calculations), late-time tails, gravitational stability, AdS/CFT interpretation of quasinormal modes and holographic superconductors. We also briefly touch on state-of-the-art observational possibilities for detecting quasinormal modes of black holes.

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