Stability of Sigma-Model Strings and Textures

Details Stability of Sigma-Model Strings and Textures Stability of Sigma-Model Strings and Textures

2002-01-14

arxiv.org/abs/gr-qc/0201042v1

Class.Quant.Grav.19:L17,2002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, to be published in Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/19/4/101

In flat space-time, sigma-model strings and textures are both unstable to
collapse and subsequent decay. With sufficient cosmological expansion, however,
they are stable in a generalized sense: a small perturbation will cause them to
change their shape, but they do not decay. The current rate of expansion is
sufficient to stabilize strings, but not textures.

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