Vacuum polarization by a composite topological defect
高能物理 - 理论
2008-11-26 v1 广义相对论与量子宇宙学
量子物理
摘要
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.
引用
@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}
}
备注
11 pages, 2 figures