Limit on the Temporal Variation of the Fine-Structure Constant Using Atomic Dysprosium

Abstract

Over a period of eight months, we have monitored transition frequencies between nearly degenerate, opposite-parity levels in two isotopes of atomic dysprosium (Dy). These transition frequencies are highly sensitive to temporal variation of the fine-structure constant ($\alpha$) due to relativistic corrections of large and opposite sign for the opposite-parity levels. In this unique system, in contrast to atomic-clock comparisons, the difference of the electronic energies of the opposite-parity levels can be monitored directly utilizing a radio-frequency (rf) electric-dipole transition between them. Our measurements show that the frequency variation of the 3.1-MHz transition in ${}^{163}$Dy and the 235-MHz transition in ${}^{162}$Dy are 9.0$\pm$6.7 Hz/yr and -0.6$\pm$6.5 Hz/yr, respectively. These results provide a value for the rate of fractional variation of $\alpha$ of $(-2.7\pm 2.6)\times 10^{-15}$ yr${}^{-1}$ (1 $\sigma$) without any assumptions on the constancy of other fundamental constants, indicating absence of significant variation at the present level of sensitivity.

4 pages, 2 figures

References in corpus (19)

• The fundamental constants and their variation: observational status and theoretical motivations
• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
• New Limits to the Drift of Fundamental Constants from Laboratory Measurements
• The Oklo bound on the time variation of the fine-structure constant revisited
• Limits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars
• Space-Time Variation of Physical Constants and Relativistic Corrections in Atoms
• A Search for Variations of Fundamental Constants using Atomic Fountain Clocks
• Calculations of the Relativistic Effects in Many-Electron Atoms and Space-Time Variation of Fundamental Constants
• New limit on the present temporal variation of the fine structure constant
• Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock
• The Cosmological Evolution of the Nucleon Mass and the Electroweak Coupling Constants
• The nuclear interaction at Oklo 2 billion years ago
• Probing the variability of the fine-structure constant with the VLT/UVES
• Relativistic effects in Sr, Dy, YbII and YbIII and search for variation of the fine structure constant
• Time-variability of alpha from realistic models of Oklo reactors
• Neutron Moderation in the Oklo Natural Reactor and the Time Variation of alpha
• Towards a sensitive search for variation of the fine structure constant using radio-frequency E1 transitions in atomic dysprosium
• Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium

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