Cosmic strings in Bekenstein-type models

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Menezes, J (Autor) Outra; Avelino, PP (Autor) FCUP; C. dos Santos (Autor) FCUP

Revista

Título: Journal of Cosmology and Astroparticle Physics

Vol. 2005

Páginas: 93-105

ISSN: 1475-7516

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 11 Citações

Scopus - 8 Citações

Outras Informações

ID Authenticus: P-000-4WJ

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

Abstract (EN): We study static cosmic string solutions in the context of Bekensteintype 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. ne structure constant, alpha. We consider models with a generic gauge kinetic function and show that the equivalence principle constraints impose tight limits on the allowed variations of a induced by string networks on cosmological scales.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13