Improvedα4term of the electron anomalous magnetic moment

Anomalous magnetic moment of a bound electron

We study binding corrections to the gyromagnetic factor ge of an electron in hydrogen-like ions. We argue that the leading order binding effects in radiative corrections ∆grad are universal to all orders in α/π and the complete result reads ∆grad = (gfree − 2) · [1 + (Zα) 2/6] + O ( α π · (Zα)4 ) . The theoretical uncertainty in the prediction for the experimentally interesting carbon ion is de...

Anomalous magnetic moment of the electron in a medium

Radiative effects are considered for an electron moving in a medium in the presence of an external electromagnetic field. Anomalous magnetic moment (AMM) of the electron in α-order is calculated under these conditions in the form of two-dimensional integral. Behavior of AMM of high energy electron under influence of multiple scattering in a medium is analyzed. Both mentioned effects lead to red...

Comments on the electron anomalous magnetic moment between conducting plates.

Anomalous Magnetic Moment of Electron in Chern-Simons QED

We calculate the anomalous magnetic moment of the electron in the Chern-Simons theory in 2 + 1 dimensions with and without a Maxwell term, both at zero temperature as well as at finite temperature. In the case of the Maxwell-Chern-Simons (MCS) theory, we find that there is an infrared divergence, both at zero as well as at finite temperature, when the tree level Chern-Simons term vanishes, whic...

Anomalous magnetic moment of an electron near a dispersive surface

Changes in the magnetic moment of an electron near a dielectric or conducting surface due to boundarydependent radiative corrections are investigated. The electromagnetic field is quantized by normal mode expansion for a nondispersive dielectric and an undamped plasma, but the electron is described by the Dirac equation without matter-field quantization. Perturbation theory in the Dirac equatio...