Early Universe Constraints on Time Variation of Fundamental Constants

SUSANA J. LANDAU; MERCEDES E. MOSQUERA; CLAUDIA G. SCOCCOLA; HECTOR VUCETICH

PHYSICAL REVIEW D

AMER PHYSICAL SOC

Lugar: New York; Año: 2008 vol. 78 p. 8352701 - 8352716

1550-7998

We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, CMB and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant alpha, and the Higgs vacuum expectation value <v> without assuming any theoretical framework. A variation in <v> leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of alpha and the electron mass m_e. In a purely phenomenological fashion, we derive a relationship between both variations.