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arXiv · hep-th/0406130

Can Black Hole Relax Unitarily?

Sergey N. Solodukhin
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Abstract

We review the way the BTZ black hole relaxes back to thermal equilibrium after a small perturbation and how it is seen in the boundary (finite volume) CFT. The unitarity requires the relaxation to be quasi-periodic. It is preserved in the CFT but is not obvious in the case of the semiclassical black hole the relaxation of which is driven by complex quasi-normal modes. We discuss two ways of modifying the semiclassical black hole geometry to maintain unitarity: the (fractal) brick wall and the worm-hole modification. In the latter case the entropy comes out correctly as well.

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Sergey N. Solodukhin. 2004-06-16. Can Black Hole Relax Unitarily?. https://doi.org/10.1142/9789812702166_0009

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