What Casimir Energy can suggest about Space Time Foam?
Abstract
In the context of a model of space-time foam, made by wormholes we discuss the possibility of having a foam formed by different configurations. An equivalence between Schwarzschild and Schwarzschild-Anti-de Sitter wormholes in terms of Casimir energy is shown. An argument to discriminate which configuration could represent a foamy vacuum coming from Schwarzschild black hole transition frequencies is used. The case of a positive cosmological constant is also discussed. Finally, a discussion involving charged wormholes leads to the conclusion that they cannot be used to represent a ground state of the foamy type.
Cite
@article{arxiv.gr-qc/0110087,
title = {What Casimir Energy can suggest about Space Time Foam?},
author = {Remo Garattini},
journal= {arXiv preprint arXiv:gr-qc/0110087},
year = {2009}
}
Comments
ReVTeX, 3 pages. Talk given at the Fifth Workshop on Quantum Field Theory under the Influence of External Conditions, Leipzig, September 10-14, 2001