Testing quantum electrodynamics in the lowest singlet states of beryllium atom
Atomic Physics
2018-08-08 v1
Abstract
High-precision results are reported for the energy levels of and states of the beryllium atom. Calculations are performed using fully correlated Gaussian basis sets and taking into account the relativistic, quantum electrodynamics (QED), and finite nuclear mass effects. Theoretical predictions for the ionization potential of the beryllium ground state and the transition energy are compared to the known but less accurate experimental values. The accuracy of the four-electron computations approaches that achieved for the three-electron atoms, which enables determination of the nuclear charge radii and precision tests of QED.
Keywords
Cite
@article{arxiv.1302.2175,
title = {Testing quantum electrodynamics in the lowest singlet states of beryllium atom},
author = {Mariusz Puchalski and Krzysztof Pachucki and Jacek Komasa},
journal= {arXiv preprint arXiv:1302.2175},
year = {2018}
}