标题： α变化在超冷原子散射实验中的灵敏度 显示英文标题

标题： Sensitivity to alpha-variation in ultracold atomic-scattering experiments

摘要： 我们对铯和汞进行了数值计算，以估计散射长度对精细结构常数α变化的敏感性。 所使用的方法遵循Chin和Flambaum [Phys. Rev. Lett. 96, 230801 (2006)] 的想法，其中考虑了对电子与质子质量比β变化的敏感性。 我们证明对于重系统，对α变化的敏感性与对β变化的敏感性处于同一数量级。 在接近狭窄的Feshbach共振处，敏感性的增强可能超过九个数量级。 显示英文摘要

摘要： 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.