Time variation of the electron mass in the early universe and the Barrow-Magueijo model

We put limits on the time variation of the electron mass in the early universe using observational primordial abundances of D, <SUP>4</SUP>He, and <SUP>7</SUP>Li, recent data from the cosmic microwave background, and the 2dFGRS power spectrum. Furthermore, we use these constr...

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Detalles Bibliográficos
Autores principales: Scóccola, Claudia Graciela, Mosquera, Mercedes Elisa, Landau, Susana Judith, Vucetich, Héctor
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Ciencias Astronómicas
Cosmic microwave background
Cosmology: Theory
Early universe
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84151
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:We put limits on the time variation of the electron mass in the early universe using observational primordial abundances of D, <SUP>4</SUP>He, and <SUP>7</SUP>Li, recent data from the cosmic microwave background, and the 2dFGRS power spectrum. Furthermore, we use these constraints together with other astronomical and geophysical bounds from the late universe to test the Barrow-Magueijo model for the variation in m<SUB>e</SUB>. From our analysis we obtain -0.615 < Gω/c<SUP>4</SUP> < -0.045 (3 σ interval), in disagreement with the result obtained in the original paper.

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