Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-11-26
Phys.Lett.B660:529-533,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 1 figure. Version to appear in PLB
Scientific paper
10.1016/j.physletb.2008.01.047
Within the context of mass-varying neutrinos, we construct a cosmological model that has a phase transition in the electromagnetic fine structure constant \alpha at a redshift of 0.5. The model accommodates hints of a time variable \alpha in quasar spectra and the nonobservance of such an effect at very low redshifts. It is consistent with limits from the recombination and primordial nucleosynthesis eras and is free of instabilities.
Anchordoqui Luis
Barger Vernon
Goldberg Haim
Marfatia Danny
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