Year: 2005
Type: article
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 the equivalence principle constraints impose tight limits on the allowed variations of α induced by string networks on cosmological scales.
Authors: J Menezes, P P Avelino, C Santos
Institution: Universidade do Porto
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2033322870