Gauge invariance of quantum electrodynamics of multi-electron atoms
arXiv:2009.13389 · doi:10.1134/S1063778823020138
Abstract
The proof of gauge invariance of the quantum electrodynamics of photons and electrons does not apply directly to the quantum electrodynamics of photons, electrons, and nuclei because multi-electron atoms belong to the space of asymptotic states of the extended theory. We offer two possible ways to circumvent this problem and prove, using a fairly general model for the description of nucleon-nucleon interaction in nuclei, the gauge invariance of the masses and electromagnetic form factors of multi-electron atoms in all orders of perturbation theory.
14 pages, 9 figures; replaced with published version