2004/11/30 by Michael Doran
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1088/1475-7516/2005/04/016
published as JCAP 0504 (2005) 016 · 6 pages, 5 figures, final version to appear in JCAP
arxiv created 2005/04/26 · openalex publication_date 2005/04/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We investigate a link between the running of the fine structure constant α and a time evolving scalar dark energy field. Employing a versatile parametrization for the equation of state, we exhaustively cover the space of dark energy models. Under the assumption that the change in α is to first order given by the evolution of the quintessence field, we show that current Oklo, quasi-stellar object and equivalence principle observations restrict the model parameters considerably more strongly than observations of the cosmic microwave background, large scale structure and supernovae Ia combined.