Phase transition in the fine structure constant
High Energy Physics - Phenomenology
2008-11-26 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
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.
Keywords
Cite
@article{arxiv.0711.4055,
title = {Phase transition in the fine structure constant},
author = {L. Anchordoqui and V. Barger and H. Goldberg and D. Marfatia},
journal= {arXiv preprint arXiv:0711.4055},
year = {2008}
}
Comments
6 pages, 1 figure. Version to appear in PLB