Do the fundamental constants change with time ?

Details Do the fundamental constants change with time ? Do the fundamental constants change with time ?

2008-10-08

arxiv.org/abs/0810.1356v1

Mod.Phys.Lett.A23:2711-2725,2008

Astronomy and Astrophysics

Astrophysics

15 pages, 3 figures. This is an electronic version of an invited review article for Mod. Phys. Lett. A, published as [Mod. Phy

Scientific paper

10.1142/S0217732308028521

Comparisons between the redshifts of spectral lines from cosmologically-distant galaxies can be used to probe temporal changes in low-energy fundamental constants like the fine structure constant and the proton-electron mass ratio. In this article, I review the results from, and the advantages and disadvantages of, the best techniques using this approach, before focussing on a new method, based on conjugate satellite OH lines, that appears to be less affected by systematic effects and hence holds much promise for the future.

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