Cosmic strings and strings in gravitational waves

Details Cosmic strings and strings in gravitational waves Cosmic strings and strings in gravitational waves

2001-06-28

arxiv.org/abs/gr-qc/0106089v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, LaTeX, reprinted from Astron. Nachr. 310 (1989) 103

Scientific paper

We consider strings with the Nambu action as extremal surfaces in a given space-time, thus, we ignore their back reaction. Especially, we look for strings sharing one symmetry with the underlying space-time. If this is a non-null symmetry, the problem of determining the motion of the string can be dimensionally reduced. We get exact solutions for the following cases: straight and circle-like strings in a Friedmann background, straight strings in an anisotropic Kasner background, different types of strings in the metric of a gravitational wave. The solutions will be discussed.

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