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A Re-examination of the $^{187}$Re Bound on the Variation of Fundamental Couplings

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arxiv astro-ph/0309252 v2 pith:LKOEQYVT submitted 2003-09-08 astro-ph hep-ph

classification astro-phhep-ph
keywords alphaboundvariationconstantcouplingsfine-structurechangecombine
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abstract

We reconsider the Re187 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 $\alpha$ of \sim 4.6 Gyr ago is consistent with zero, Delta alpha/alpha = [-8\pm 8 (1\sigma)] x 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.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The Confrontation between General Relativity and Experiment

    gr-qc 2014-03 accept novelty 2.0 of 10

    Experiments confirm general relativity to high precision in weak-field and strong-field regimes, with gravitational wave damping matching predictions to better than 0.5 percent.

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