Casimir energy-momentum tensor for a brane in de Sitter spacetime
High Energy Physics - Theory
2009-11-10 v1
Abstract
Vacuum expectation values of the energy-momentum tensor for a conformally coupled scalar field is investigated in de Sitter (dS) spacetime in presence of a curved brane on which the field obeys the Robin boundary condition with coordinate dependent coefficients. To generate the corresponding vacuum densities we use the conformal relation between dS and Rindler spacetimes and the results previously obtained by one of the authors for the Rindler counterpart. The resulting energy-momentum tensor is non-diagonal and induces anisotropic vacuum stresses. The asymptotic behaviour of this tensor is investigated near the dS horizon and the boundary.
Keywords
Cite
@article{arxiv.hep-th/0311158,
title = {Casimir energy-momentum tensor for a brane in de Sitter spacetime},
author = {A. A. Saharian and M. R. Setare},
journal= {arXiv preprint arXiv:hep-th/0311158},
year = {2009}
}
Comments
10 pages, no figure