Local Experiments See Cosmologically Varying Constants

Details Local Experiments See Cosmologically Varying Constants Local Experiments See Cosmologically Varying Constants

2005-12-20

arxiv.org/abs/gr-qc/0512117v2

Phys.Lett.B639:596-599,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages

Scientific paper

10.1016/j.physletb.2006.07.016

We describe a rigorous construction, using matched asymptotic expansions, which establishes under very general conditions that local terrestrial and solar-system experiments will measure the effects of varying `constants' of Nature occurring on cosmological scales to computable precision. In particular, `constants' driven by scalar fields will still be found to evolve in time when observed within virialised structures like clusters, galaxies, and planetary systems. This provides a justification for combining cosmological and terrestrial constraints on the possible time variation of many assumed `constants' of Nature, including the fine structure constant and Newton's gravitation constant.

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