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

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Avelino, PP (Author) FCUP; Martins, CJAP (Author) Other; Menezes, J (Author) Other; C. dos Santos (Author) FCUP

Journal

Title: Journal of Cosmology and Astroparticle Physics

Vol. 2006

Pages: 018-018

ISSN: 1475-7516

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 7 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11