Entropy of Constrained Gravitational Instanton
General Relativity and Quantum Cosmology
2007-05-23 v2
Abstract
The seeds for quantum creations of universes are constrained gravitational instantons. For all compact constrained instantons with U(1) isometry, the period of the group parameter is identified as the reciprocal of the temperature. If remains a free parameter under the constraints, then the Euclidean action becomes the negative of the "entropy". As examples, we perform the calculations for the Taub-NUT and Taub-bolt-type models and study the quantum creation of the Taub-NUT universe.
Cite
@article{arxiv.gr-qc/9812051,
title = {Entropy of Constrained Gravitational Instanton},
author = {Wu Zhong Chao},
journal= {arXiv preprint arXiv:gr-qc/9812051},
year = {2007}
}
Comments
8 pages