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Article Dans Une Revue Physical Review Letters Année : 2004

New Limits on the Drift of Fundamental Constants from Laboratory Measurements

Résumé

We have remeasured the absolute 1S-2S transition frequency nuH in atomic hydrogen. A comparison with the result of the previous measurement performed in 1999 sets a limit of (-29±57) Hz for the drift of nuH with respect to the ground state hyperfine splitting nuCs in 133Cs. Combining this re­sult with the recently published optical transition frequency in 199Hg+ against nuCs and a microwave 87Rb and 133Cs clock comparison, we deduce separate limits on alpha˙/alpha=(-0.9±2.9)×10-15 yr-1 and the fractional time variation of the ratio of Rb and Cs nuclear magnetic moments muRb/muCs equal to (-0.5±1.7)×10-15 yr-1. The latter provides information on the temporal behavior of the constant of strong interaction.
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hal-03790963 , version 1 (01-02-2024)

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M. Fischer, Nikolai Kolachevsky, M. Zimmermann, Ronald Holzwarth, Thomas Udem, et al.. New Limits on the Drift of Fundamental Constants from Laboratory Measurements. Physical Review Letters, 2004, 92, pp.230802. ⟨10.1103/PhysRevLett.92.230802⟩. ⟨hal-03790963⟩
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