Sensitivity to alpha-variation in ultracold atomic-scattering experiments

Details Sensitivity to alpha-variation in ultracold atomic-scattering experiments Sensitivity to alpha-variation in ultracold atomic-scattering experiments

2011-03-07

arxiv.org/abs/1103.1183v1

Physics

Atomic Physics

5 pages, 1 figure

Scientific paper

We present numerical calculations for cesium and mercury to estimate the sensitivity of the scattering length to the variation of the fine structure constant alpha. The method used follows ideas Chin and Flambaum [Phys. Rev. Lett. 96, 230801 (2006)], where the sensitivity to the variation of the electron to proton mass ratio, beta, was considered. We demonstrate that for heavy systems, the sensitivity to variation of alpha is of the same order of magnitude as to variation of beta. Near narrow Feshbach resonances the enhancement of the sensitivity may exceed nine orders of magnitude.

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