Early Universe Constraints on Time Variation of Fundamental Constants

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

PHYSICAL REVIEW D - PARTICLE AND FILDS

American Physical Society

Año: 2008 vol. 78 p. 1 - 16

0556-2821

We study the time variation of fundamental constants in the earlyUniverse. Using data from primordial light nuclei abundances, CMBand the 2dFGRS power spectrum, we put constraints on the timevariation of the fine structure constant $alpha$, and the Higgsvacuum expectation value $<v>$ without assuming any theoreticalframework. A variation in $<v>$ leads to a variation in the electronmass, among other effects. Along the same line, we study thevariation of $alpha$ and the electron mass $m_e$. In a purelyphenomenological fashion, we derive a relationship between bothvariations.