Unitary evolution of perturbations of a two-dimensional black hole
arXiv:hep-th/0601186 · doi:10.1016/j.physletb.2006.04.019
Abstract
We discuss massive scalar perturbations of a two-dimensional dilaton black hole. We employ a Pauli-Villars reqularization scheme to calculate the effect of the scalar perturbation on the Bekenstein-Hawking entropy. By concentrating on the dynamics of the scalar field near the horizon, we argue that quantum effects alter the effective potential. We calculate the two-point function explicitly and show that it exhibits Poincare recurrences.
11 pages