Effects of Nonlocality of the Interaction of a Muon with a Nucleus on the Lamb Shift in Muonic Atoms

摘要

We investigate effects of nonlocality in time of the interaction of a muon with a nucleus, which is caused by thepolarization of electronic vacuum on the Lamb shift in muonic atoms. The vacuum-polarization corrections tothe energy levels of heavy muonic atoms are calculated with and without taking into account the nonlocalityof the interaction. The results of the calculations show that the nonlocal corrections to vacuum-polarizationcontribution to the Lamb shift are comparable with the Kallen-Sabry correction that is of order cd(Za).