Testing the Variation of Fundamental Constants with the CMB

S. Galli, C. J. A. P. Martins, A. Melchiorri, E. Menegoni

Abstract
The high precision of current and future CMB data may allow the detection of numerous physical processes that might change the standard model of recombination, leaving recognizable imprints on the angular power spectra. We review some of the results obtained in constraining the cariation of fundamental constants, in particular the effects of the gravitational constant G and of the fine structure constant α.

From Varying Couplings to Fundamental Physics
Proceedings of Symposium 1 of JENAM 2010
(Eds.) C. J. A. P. Martins, P. Molaro

Springer-Verlag Berlin
Page 59
2011

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