Lamb shifts for hydrogen, using the sachs elementary interaction theory

Abstract

The Lamb shifts of the $1/2 and P1/2 states of hydrogen atoms are calculated using the Sachs elementary interaction theory. Both $1/2 and P1/2 levels are shifted with respect to the Dirac levels by energies of the same order of magnitude. Agreement with experiment is obtained for the 2S1/2 -2P1/2 and 3S~/2 -3P1/2 Lamb shifts, but the predicted IS1/2 -2391/2 Lamb shift term of 12,164 MHz is in disagreement with the experimental value of 7860 + 1140 MHz.