Weak Interactions in Atomic Physics

对重的多电子原子的宇称禁戒跃迁幅度进行了高精度的计算，以提供对标准模型的辐射修正的检验。这些修正对目前未知的顶夸克质量不敏感，这使得对新物理的灵敏探测成为可能。在Cs原子中，需要许多体微扰理论和耦合团簇技术，包括三重激发，才能达到1.1%的计算精度。此外，还将对高电荷态离子的屏蔽Lamb位移进行计算，以便提供与少数价电子原子系统中的QED辐射修正进行比较的信息。

High accuracy calculations of parity forbidden transition amplitudes in heavy, many--electron atoms are undertaken to provide a test of radiative corrections to the Standard Model. The corrections are insensitive to the presently unknown mass of the top quark, which allows a sensitive probe of the new physics. Many body perturbation theory and coupled cluster techniques, including triple excitations are required to perform the calculations to an accuracy of .1% in the Cs atom. In addition, a calculation of the screened Lamb shift in highly charged ions will be undertaken in order to provide information to compare with experimental QED radiative corrections in few valence electron atomic systems.