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          Institute: MPI für Kernphysik     Collection: Theoretical Quantum Dynamics     Display Documents

ID: 204925.0, MPI für Kernphysik / Theoretical Quantum Dynamics
New Limits on the Drift of Fundamental Constants from Laboratory Measurements
Authors:Fischer, M.; Kolachevsky, Nikolai; Zimmermann, Marcus; Holzwarth, Ronald; Udem, Thomas; Hänsch, Theodor 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, Martin; Jentschura, Ulrich David; Keitel, Christoph Helmut
Research Context:New Limits on the Drift of Fundamental Constants from Laboratory Measurements
Date of Publication (YYYY-MM-DD):2004-06-10
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Issue / Number:23
Sequence Number of Article:230802
Copyright:©2004 The American Physical Society
Review Status:not specified
Audience:Experts Only
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Communicated by:C.H. Keitel
Affiliations:MPI für Kernphysik/ Group C.H. Keitel/Quantum Electrodynamics and High Precision Theory (U. D. Jentschura)
MPI für Quantenoptik
External Affiliations:BNM-SYRTE, Observatoire de Paris, 61 Avenue de l'Observatoire, 75014 Paris, France
Laboratoire Kastler Brossel, ENS, 24 rue Lhomond, 75005 Paris, France
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