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

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

2007-08-14

arxiv.org/abs/0708.1806v1

Phys.Rev.Lett.100:043201,2008

Physics

Atomic Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.100.043201

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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