Black Hole Constraints on Varying Fundamental Constants

Details Black Hole Constraints on Varying Fundamental Constants Black Hole Constraints on Varying Fundamental Constants

2007-06-14

arxiv.org/abs/0706.2188v2

Phys.Rev.Lett.99:061301,2007

Astronomy and Astrophysics

Astrophysics

5 pages, published version

Scientific paper

10.1103/PhysRevLett.99.061301

Here we apply the Generalized Second Law of Thermodynamics and derive upper limits on the variation in the fundamental constants. The maximum variation in the electronic charge permitted for black holes accreting and emitting in the present cosmic microwave background corresponds to a variation in the fine structure constant of ((Delta alpha) / alpha) ~ 2 x 10^-23 per second. This value matches the variation measured by Webb et al. using absorption lines in the spectra of distant quasars and suggests the variation mechanism may be a coupling between the electron and the cosmic photon background.

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