Effective Angular Momentum Operators in NRQED and Matching at One-Loop Order
High Energy Physics - Phenomenology
2011-03-18 v2
Abstract
We derive the effective angular momentum operator to and one-loop order in non-relativistic quantum electrodynamics (NRQED). In both dimensional and three-momentum-cutoff regularization schemes, we obtain the non-relativistic expansion for the spin and orbital angular momentum operators of the electron and photon, respectively. Our result is useful in precision calculations of the angular momentum properties for non-relativistic QED bound states, such as atom systems.
Keywords
Cite
@article{arxiv.1012.3668,
title = {Effective Angular Momentum Operators in NRQED and Matching at One-Loop Order},
author = {Panying Chen and Xiangdong Ji and Yue Zhang},
journal= {arXiv preprint arXiv:1012.3668},
year = {2011}
}
Comments
23 pages, 6 figures, 2 tables; published version