Vacuum polarization by a composite topological defect
High Energy Physics - Theory
2008-11-26 v1 General Relativity and Quantum Cosmology
Quantum Physics
Abstract
In this paper we analyze one-loop quantum effects of a scalar field induced by a composite topological defect consisting a cosmic string on a p-dimensional brane and a (m+1)-dimensional global monopole in the transverse extra dimensions. The corresponding Green function is presented as a sum of two terms. The first one corresponds to the bulk where the cosmic string is absent and the second one is induced by the presence of the string. For the points away from the cores of the topological defects the latter is finite in the coincidence limit and is used for the evaluation of the vacuum expectation values of the field square and energy-momentum tensor.
Keywords
Cite
@article{arxiv.hep-th/0608199,
title = {Vacuum polarization by a composite topological defect},
author = {E. R. Bezerra de Mello and A. A. Saharian},
journal= {arXiv preprint arXiv:hep-th/0608199},
year = {2008}
}
Comments
11 pages, 2 figures