Crossover quintessence and cosmological history of fundamental "constants"

Details Crossover quintessence and cosmological history of fundamental "constants" Crossover quintessence and cosmological history of fundamental "constants"

2003-01-30

arxiv.org/abs/hep-ph/0301261v2

Phys.Lett. B561 (2003) 10-16

Physics

High Energy Physics

High Energy Physics - Phenomenology

numerical example adapted to WMAP,published version,9 pages,LaTex

Scientific paper

10.1016/S0370-2693(03)00383-6

Crossover quintessence predicts that the time variation of fundamental couplings is substantially faster at redshift $z\approx 2$ than over the past few billion years. This could reconcile the reported time variation of the fine structure constant from quasar absorption lines with severe bounds from archeo-nuclear physics and high precision tests of the equivalence principle. We present a model that is consistent with all present data on time varying couplings, tests of the equivalence principle and cosmology.

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