Cosmic strings in Bekenstein-type models

J. Menezes; P. P. Avelino; C. Santos

doi:10.1088/1475-7516/2005/02/003

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arXiv · astro-ph/0406622

Cosmic strings in Bekenstein-type models

J. Menezes·P. P. Avelino·C. Santos

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Abstract

We study static cosmic string solutions in the context of Bekenstein-type models. We show that there is a class of models of this type for which the classical Nielsen-Olesen vortex is still a valid solution. However, in general static string solutions in Bekenstein-type models strongly depart from the standard Nielsen-Olesen solution with the electromagnetic energy concentrated along the string core seeding spatial variations of the fine structure constant, $α$. We consider models with a generic gauge kinetic function and show that equivalence principle constraints impose tight limits on the allowed variations of $α$ induced by string networks on cosmological scales.

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J. Menezes, P. P. Avelino, C. Santos. 2005-02-24. Cosmic strings in Bekenstein-type models. https://doi.org/10.1088/1475-7516%2F2005%2F02%2F003

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