Abstract. We compare two area spectra proposed in loop quantum gravity in different approaches to compute the entropy of the Schwarzschild black hole. We describe the black hole in general microcanonical and canonical area ensembles for these spectra. We show that in the canonical ensemble, the results for all statistical quantities for any spectrum can be reproduced by a heuristic picture of Bekenstein up to second order. For one of these spectra, the equally spaced spectrum, in light of a proposed connection of the black-hole area spectrum to the quasinormal mode spectrum and following Preprint hep-th/0304135, we present explicit calculations to argue that this spectrum is completely consistent with this connection. This follows without requiring a change in the gauge group of the spin degrees of freedom in this formalism from SU(2) to SO(3). We also show that independent of the area spectrum, the degeneracy of the area observable is bounded by CAexp(A/4), where A is measured in Planck units and C is a constant of order unity.

PACS numbers: 04.70.Dy, 04.60.Pp

Print publication: Issue 14 (21 July 2004)
Received 4 March 2004
Published 21 June 2004