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Fischer M, Kolachevsky N, Zimmermann M, et al. New limits on the drift of fundamental constants from laboratory measurements. Phys Rev Lett. 2004;92(23):230802doi: 10.1103/PhysRevLett.92.230802.
Fischer, M., Kolachevsky, N., Zimmermann, M., Holzwarth, R., Udem, T., Hänsch, T. W., Abgrall, M., Grünert, J., Maksimovic, I., Bize, S., Marion, H., Pereira Dos Santos, F., Lemonde, P., Santarelli, G., Laurent, P., Clairon, A., Salomon, C., Haas, M., Jentschura, U. D., & Keitel, C. H. (2004). New limits on the drift of fundamental constants from laboratory measurements. Physical review letters, 92(23), 230802. https://doi.org/10.1103/PhysRevLett.92.230802
Fischer, M, et al. "New limits on the drift of fundamental constants from laboratory measurements." Physical review letters vol. 92,23 (2004): 230802. doi: https://doi.org/10.1103/PhysRevLett.92.230802
Fischer M, Kolachevsky N, Zimmermann M, Holzwarth R, Udem T, Hänsch TW, Abgrall M, Grünert J, Maksimovic I, Bize S, Marion H, Pereira Dos Santos F, Lemonde P, Santarelli G, Laurent P, Clairon A, Salomon C, Haas M, Jentschura UD, Keitel CH. New limits on the drift of fundamental constants from laboratory measurements. Phys Rev Lett. 2004 Jun 11;92(23):230802. doi: 10.1103/PhysRevLett.92.230802. Epub 2004 Jun 10. PMID: 15245149.
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Phys Rev Lett. 2004 Jun 11;92(23):230802. doi: 10.1103/PhysRevLett.92.230802. Epub 2004 Jun 10.

New limits on the drift of fundamental constants from laboratory measurements.

Physical review letters

M Fischer, N Kolachevsky, M Zimmermann, R Holzwarth, Th Udem, T W Hänsch, M Abgrall, J Grünert, I Maksimovic, S Bize, H Marion, F Pereira Dos Santos, P Lemonde, G Santarelli, P Laurent, A Clairon, C Salomon, M Haas, U D Jentschura, C H Keitel

Affiliations

  1. Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.

PMID: 15245149 DOI: 10.1103/PhysRevLett.92.230802

Abstract

We have remeasured the absolute 1S-2S transition frequency nu(H) 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 nu(H) with respect to the ground state hyperfine splitting nu(Cs) in 133Cs. Combining this result with the recently published optical transition frequency in 199Hg+ against nu(Cs) and a microwave 87Rb and 133Cs clock comparison, we deduce separate limits on alpha/alpha=(-0.9+/-2.9) x 10(-15) yr(-1) and the fractional time variation of the ratio of Rb and Cs nuclear magnetic moments mu(Rb)/mu(Cs) equal to (-0.5+/-1.7) x 10(-15) yr(-1). The latter provides information on the temporal behavior of the constant of strong interaction.

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