Reexamination of the187Re bound on the variation of fundamental couplings

Keith A. Olive, Maxim Pospelov, Yong Zhong Qian, Gérard Manhès, Elisabeth Vangioni-Flam, Alain Coc, Michel Cassé

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We reconsider the 187Re bound on the variation of the fine-structure constant. We combine the meteoritic measurement with several present-day lab measurements to firmly establish the quantitative upper limit to the time variation over the age of the solar system. We find that the relative change of the fine-structure constant between its present value and α of ∼4.6 Gyr ago is consistent with zero, Δα/α=[-8±8 (1σ)]×10-7. We also rederive this bound in models where all gauge and Yukawa couplings vary in an interdependent manner, as would be expected in unified theories.

Original languageEnglish (US)
Article number027701
JournalPhysical Review D
Issue number2
StatePublished - Jan 30 2004


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