Energy-momentum tensor of a hydrogen atom: stability, D-term, and the Lamb shift
High Energy Physics - Phenomenology
2023-09-21 v1
Abstract
We clarify two issues related to the so-called -term in matrix elements of the energy-momentum tensor. First, we show that in a stable system, the -term can have either sign, contrary to claims that it must be negative. Second, we demonstrate a logarithmic enhancement of the correction to the -term in any state of the hydrogen atom. We contrast this enhancement with the Lamb shift where it is present only in S-states.
Keywords
Cite
@article{arxiv.2309.10994,
title = {Energy-momentum tensor of a hydrogen atom: stability, D-term, and the Lamb shift},
author = {Andrzej Czarnecki and Yizhuang Liu and Syed Navid Reza},
journal= {arXiv preprint arXiv:2309.10994},
year = {2023}
}