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Precision test of mass-ratio variations with lattice-confined ultracold molecules
Zelevinsky, T Kotochigova, S Ye, J
Zelevinsky, T
Kotochigova, S
Ye, J
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Journal Article
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2008-01-29
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10.1103/PhysRevLett.100.043201
Abstract
We propose a precision measurement of time variations of the proton-electron mass ratio using ultracold molecules in an optical lattice. Vibrational energy intervals are sensitive to changes of the mass ratio. In contrast to measurements that use hyperfine-interval-based atomic clocks, the scheme discussed here is model independent and does not require separation of time variations of different physical constants. The possibility of applying the zero-differential-Stark-shift optical lattice technique is explored to measure vibrational transitions at high accuracy. © 2008 The American Physical Society.
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Physical Review Letters
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