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arXiv · hep-ph/0301261

Crossover quintessence and cosmological history of fundamental "constants"

C. Wetterich
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Abstract

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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C. Wetterich. 2003-03-12. Crossover quintessence and cosmological history of fundamental "constants". https://doi.org/10.1016/s0370-2693(03)00383-6

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