547 research outputs found
Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules
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.Comment: 4 pages, 4 figure
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