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New limits on variation of the fine-structure constant using atomic dysprosium

N Leefer1, C T M Weber, A Cingöz

  • 1Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.

Physical Review Letters
|August 27, 2013
PubMed
Summary

Scientists measured radio-frequency transitions in dysprosium (Dy) atoms to test for changes in the fine-structure constant (α). Results show no significant variation, providing precise constraints on fundamental physics.

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