Cosmic strings with positive $\Lambda$
General Relativity and Quantum Cosmology
2013-01-22 v1
Abstract
We discuss cosmic Nielsen-Olesen strings in space-times endowed with a positive cosmological constant. For the cylindrically symmetric, static free cosmic string, we discuss the contribution of the cosmological constant to the angle deficit, and to the motion of the null/timelike geodesics. For a non-gravitating cosmic string in a Schwarzschild-de Sitter space-time, we discuss how a thin string can pierce the two horizons. We also present a metric which describes the exterior of a self gravitating thin string present in the Schwarzschild-de Sitter space-time.
Cite
@article{arxiv.1003.0295,
title = {Cosmic strings with positive $\Lambda$},
author = {Sourav Bhattacharya and Amitabha Lahiri},
journal= {arXiv preprint arXiv:1003.0295},
year = {2013}
}
Comments
3 pages; based on a talk given in the 12th Marcel Grossmann Meeting, Paris by S. Bhattacharya; MG12 proceedings style