Anomalous magnetic moment and Lamb shift in the second order of the perturbation theory with finite electron mass renormalization in quantum electrodynamics

Abstract

The paper determines the anomalous magnetic moment and Lamb energy level shift in the second order of the perturbation theory using the algorithm of self-energy expression regularization in quantum electrodynamics that meets the relativistic and gauge invariance requirements; the comparison is made to the associated conventional quantum electrodynamics results. A limiting 4-impulse with an infinitely large temporal component and limited value of spatial components that depend quite weakly on the Dirac particle impulse variation is introduced within the algorithm. The answer in regard to the agreement between the experimental data and results of the calculations by the algorithm of this paper will be given by the calculations of the next order of the perturbation theory which are being planned for the nearest future.