Two-loop QED corrections with closed fermion loops for the bound-electron g factor
Atomic Physics
2015-06-16 v1
Abstract
Two-loop QED corrections with closed fermion loops are calculated for the 1s bound-electron g factor. Calculations are performed to all orders in the nuclear binding strength parameter Z\alpha (where Z is the nuclear charge and \alpha is the fine structure constant) except for the closed fermion loop, which is treated within the free-loop (Uehling) approximation in some cases. Comparison with previous Z\alpha-expansion calculations is made and the higher-order remainder of order \alpha^2(Z\alpha)^5 and higher is separated out from the numerical results.
Keywords
Cite
@article{arxiv.1308.2138,
title = {Two-loop QED corrections with closed fermion loops for the bound-electron g factor},
author = {V. A. Yerokhin and Z. Harman},
journal= {arXiv preprint arXiv:1308.2138},
year = {2015}
}