WMAP 5-year constraints on time variation of α and me in a detailed recombination scenario

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We study the role of fundamental constants in an updated recombination scenario. We focus on the time variation of the fine structure constant α, and the electron mass me in the early Universe, and put bounds on these quantities by using data from CMB including WMAP 5-yr release and the 2dFGRS power...

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Detalles Bibliográficos
Autores principales: Scóccola, C.G., Landau, S.J., Vucetich, H.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2008
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v669_n3-4_p212_Scoccola
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We study the role of fundamental constants in an updated recombination scenario. We focus on the time variation of the fine structure constant α, and the electron mass me in the early Universe, and put bounds on these quantities by using data from CMB including WMAP 5-yr release and the 2dFGRS power spectrum. We analyze how the constraints are modified when changing the recombination scenario. © 2008 Elsevier B.V. All rights reserved.

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