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Stability of Sigma-Model Strings and Textures

R. S. Ward
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Abstract

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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R. S. Ward. 2002-01-14. Stability of Sigma-Model Strings and Textures. https://doi.org/10.1088/0264-9381%2F19%2F4%2F101

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