Comments on the electron anomalous magnetic moment between conducting plates

Comments on the electron anomalous magnetic moment between conducting plates.

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...

Causality Between Conducting Plates*

. A two-loop QED effect, uncovered by Scha.rnhorst, causes the phase and group velocities of an electromagnetic wave with w << m, to slightly exceed c, when the wave is travelling in vacua between, and perpendicular to, two parallel conducting plates. Using causal rather than Feynma.n graphs, we show that the wavefront still travels at exactly c. The two-loop effect thus poses no threat to caus...

Lepton Anomalous Magnetic Moment

This article reviews and updates the Standard Model prediction of the τ lepton g−2. Updated QED and electroweak contributions are presented, together with new values of the leading-order hadronic term, based on the recent low energy ee data from BaBar, CMD-2, KLOE and SND, and of the hadronic light-by-light contribution. The total prediction is confronted to the available experimental bounds on...