Early universe constraints on time variation of fundamental constants

Landau, Susana J.; Mosquera, Mercedes E.; Scóccola, Claudia G.; Vucetich, Héctor
Referencia bibliográfica

Physical Review D, vol. 78, Issue 8, id. 083527

Fecha de publicación:
10
2008
Número de autores
4
Número de autores del IAC
0
Número de citas
31
Número de citas referidas
25
Descripción
We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant α 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 α and the electron mass me. In a purely phenomenological fashion, we derive a relationship between both variations.