Casimir densities for a boundary in Robertson-Walker spacetime
High Energy Physics - Theory
2010-04-30 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Quantum Physics
Abstract
For scalar and electromagnetic fields we evaluate the vacuum expectation value of the energy-momentum tensor induced by a curved boundary in the Robertson--Walker spacetime with negative spatial curvature. In order to generate the vacuum densities we use the conformal relation between the Robertson-Walker and Rindler spacetimes and the corresponding results for a plate moving by uniform proper acceleration through the Fulling--Rindler vacuum. For the general case of the scale factor the vacuum energy-momentum tensor is presented as the sum of the boundary free and boundary induced parts.
Keywords
Cite
@article{arxiv.0912.5139,
title = {Casimir densities for a boundary in Robertson-Walker spacetime},
author = {A. A. Saharian and M. R. Setare},
journal= {arXiv preprint arXiv:0912.5139},
year = {2010}
}
Comments
9 pages, 1 figure