Determination of the two-loop Lamb shift in lithiumlike bismuth
- 9 July 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 64 (2), 022502
- https://doi.org/10.1103/physreva.64.022502
Abstract
The energy levels of lithiumlike bismuth are shown to be accurately described in a representation-independent manner when all diagrams involving one and two photons, with the exception of the two-loop Lamb shift, are evaluated. Comparison with the experimental value of the splitting then shows that, assuming three-photon effects are negligible, the contribution of the two-loop Lamb shift is 0.175(39) eV.
Keywords
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