The connection between the Lamb Shift and the g factor is established through the radiative corrections of the electron-positron-photon (e-e+γ) vertex function. These corrections lead to the anomalous g factor, which deviates from the value of 2 for elementary Dirac particles such as electrons and muons. The Lamb Shift, observed in hydrogen atom energy levels, is influenced by these same radiative corrections, indicating a direct relationship between the two phenomena.
PREREQUISITESPhysicists, particularly those specializing in quantum mechanics and particle physics, as well as students and researchers interested in the interactions between fundamental particles and electromagnetic fields.
Ah I see. And how are they contributing? What would change if they would not be there?vanhees71 said:The anomalous ##g## factor (devisions from 2 for elementary Dirac particles like the electron or muon) are due to the radiative corrections of the ##e\bar{e}\gamma## vertex function, which are also contributing to the Lamb shift of the hydrogen-atom levels.