Sensitivity of ultracold-atom scattering experiments to variation of the fine-structure constantBorschevsky, A., Beloy, K., Flambaum, V. V. & Schwerdtfeger, P., 19-May-2011, In : Physical Review A. 83, 5, 5 p., 052706.
Research output: Contribution to journal › Article › Academic › peer-review
We present numerical calculations for cesium and mercury to estimate the sensitivity of the scattering length to the variation of the fine-structure constant a. The method used follows the ideas of 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 the variation of a is of the same order of magnitude as to the variation of beta. Near narrow Feshbach resonances, the enhancement of the sensitivity may exceed nine orders of magnitude.
|Number of pages||5|
|Journal||Physical Review A|
|Publication status||Published - 19-May-2011|
- SPACE-TIME VARIATION, FUNDAMENTAL CONSTANTS, CLOCKS