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arXiv · 0708.1806

Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules

T. Zelevinsky·S. Kotochigova·J. Ye
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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.

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T. Zelevinsky, S. Kotochigova, J. Ye. 2007-08-14. Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules. https://doi.org/10.1103/physrevlett.100.043201

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