Casimir effect for concentric spheres in de Sitter spacetime with signature change
General Relativity and Quantum Cosmology
2009-05-03 v2
Abstract
We revisit the Casimir effect for two concentric spherical shells in de Sitter background with a new geometric configuration, namely Euclidean signature between and Lorentzian signature outside the spheres with different cosmological constants, for a massless scalar field satisfying Dirichlet boundary conditions on the spheres. It is shown that an extra constant pressure emerges due to this signature changing configuration. Some interesting aspects of this extra term are then discussed.
Keywords
Cite
@article{arxiv.gr-qc/0703153,
title = {Casimir effect for concentric spheres in de Sitter spacetime with signature change},
author = {F. Darabi},
journal= {arXiv preprint arXiv:gr-qc/0703153},
year = {2009}
}
Comments
11 pages, no figures, accepted for publication in IJTP