Reconstructing the evolution of dark energy with variations of fundamental parameters

Details Reconstructing the evolution of dark energy with variations of fundamental parameters Reconstructing the evolution of dark energy with variations of fundamental parameters

2009-10-26

arxiv.org/abs/0910.4935v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, 5 figures. IAU 2009 JD9 conference proceedings. MmSAIt, vol.80 in press. Paolo Molaro and Elisabeth Vangioni eds

Scientific paper

Under the assumption that the variations of parameters of nature and the current acceleration of the universe are related and governed by the evolution of a single scalar field, we show how information can be obtained on the nature of dark energy from observational detection of (or constraints on) cosmological variations of the fine structure constant and the proton-to-electron mass ratio. We also comment on the current observational status, and on the prospects for improvements with future spectrographs such as ESPRESSO and CODEX.

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