Can we test Dark Energy with Running Fundamental Constants ?

Details Can we test Dark Energy with Running Fundamental Constants ? Can we test Dark Energy with Running Fundamental Constants ?

2004-11-22

arxiv.org/abs/astro-ph/0411606v2

JCAP 0504 (2005) 016

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, final version to appear in JCAP

Scientific paper

10.1088/1475-7516/2005/04/016

We investigate a link between the running of the fine structure constant $\alpha$ and a time evolving scalar dark energy field. Employing a versatile parameterization for the equation of state, we exhaustively cover the space of dark energy models. Under the assumption that the change in $\alpha$ is to first order given by the evolution of the Quintessence field, we show that current Oklo, Quasi Stellar Objects and Equivalence Principle observations restrict the model parameters considerably stronger than observations of the Cosmic Microwave Background, Large Scale Structure and Supernovae Ia combined.

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