Evolution of the fine-structure constant in the non-linear regime

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

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

Revista

Título: Journal of Cosmology and Astroparticle Physics

Vol. 2006

Páginas: 018-018

ISSN: 1475-7516

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-004-FT3

DOI: 10.1088/1475-7516/2006/12/018

Abstract (EN): We study the evolution of the fine-structure constant, a, induced by non-linear density perturbationsin the context of the simplest class of quintessence models with a non-minimal coupling to the electromagnetic field, in which the gauge kinetic function is Taylor-expanded up to linear order. We show that the results obtained using the spherical infall model for an infinite wavelength inhomogeneity are inconsistent with the results of a local linearized gravity study and we argue in favour of the second approach. We also discuss recent claims that the value of a inside virialized regions could be significantly different from the background one on the basis of these findings.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11