The variation of the electromagnetic coupling and quintessence

Details The variation of the electromagnetic coupling and quintessence The variation of the electromagnetic coupling and quintessence

2008-12-28

arxiv.org/abs/0812.4827v1

Phys.Lett.B674:146-151,2009

Astronomy and Astrophysics

Astrophysics

7 pages, 7 figures

Scientific paper

10.1016/j.physletb.2009.03.021

The properties of quintessence are examined through the study of the variation of the electromagnetic coupling. We consider two simple quintessence models with a modified exponential potential and study the parameter space constraints derived from the existing observational bounds on the variation of the fine structure constant and the most recent Wilkinson Microwave Anisotropy Probe observations.

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