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New Limits on the Drift of Fundamental Constants from Laboratory Measurements

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons60487

Fischer,  M.
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60626

Kolachevsky,  Nikolai
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60970

Zimmermann,  Marcus
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60574

Holzwarth,  Ronald
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60893

Udem,  Thomas
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60535

Hänsch,  T. W.
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60532

Haas,  Martin
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

Jentschura,  Ulrich David
Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60606

Keitel,  Christoph Helmut
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Zitation

Fischer, M., Kolachevsky, N., Zimmermann, M., Holzwarth, R., Udem, T., Hänsch, T. W., et al. (2004). New Limits on the Drift of Fundamental Constants from Laboratory Measurements. Physical Review Letters, 92(23): 230802. Retrieved from http://link.aps.org/abstract/PRL/v92/e230802.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-BE74-A
Zusammenfassung
We have remeasured the absolute 1S-2S transition frequency 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 H with respect to the ground state hyperfine splitting Cs in 133Cs. Combining this result with the recently published optical transition frequency in 199Hg+ against Cs and a microwave 87Rb and 133Cs clock comparison, we deduce separate limits on /= (–0.9±2.9)×10–15 yr–1 and the fractional time variation of the ratio of Rb and Cs nuclear magnetic moments µRb/µCs equal to (–0.5±1.7)×10–15 yr–1. The latter provides information on the temporal behavior of the constant of strong interaction.