Abstract
The Hamiltonian actions for extreme and nonextreme black holes are compared and contrasted and a simple derivation of the lack of entropy of extreme black holes is given. In the nonextreme case the wave function of the black hole depends on horizon degrees of freedom which give rise to the entropy. Those additional degrees of freedom are absent in the extreme case.
- Received 12 October 1994
DOI:https://doi.org/10.1103/PhysRevD.51.4315
©1995 American Physical Society