paper

Quasinormal Modes, the Area Spectrum, and Black Hole Entropy

arXiv:gr-qc/0211076 · doi:10.1103/PhysRevLett.90.081301

Abstract

The results of canonical quantum gravity concerning geometric operators and black hole entropy are beset by an ambiguity labelled by the Immirzi parameter. We use a result from classical gravity concerning the quasinormal mode spectrum of a black hole to fix this parameter in a new way. As a result we arrive at the Bekenstein - Hawking expression of for the entropy of a black hole and in addition see an indication that the appropriate gauge group of quantum gravity is SO(3) and not its covering group SU(2).

4 pages, 2 figures

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