Effect of a positive cosmological constant on cosmic strings

Details Effect of a positive cosmological constant on cosmic strings Effect of a positive cosmological constant on cosmic strings

2008-07-03

arxiv.org/abs/0807.0543v3

Phys. Rev. D78 (2008) 065028

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

v3:15pp. References and some explanations added; version accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.78.065028

We study cosmic Nielsen-Olesen strings in space-times with a positive cosmological constant. For the free cosmic string in a cylindrically symmetric space-time, we calculate the contribution of the cosmological constant to the angle deficit, and to the bending of null geodesics. For a cosmic string in a Schwarzschild-de Sitter space-time, we use Kruskal patches around the inner and outer horizons to show that a thin string can pierce them.

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