Three-Loop Radiative Corrections to Lamb Shift and Hyperfine Splitting

Details Three-Loop Radiative Corrections to Lamb Shift and Hyperfine Splitting Three-Loop Radiative Corrections to Lamb Shift and Hyperfine Splitting

2006-12-28

arxiv.org/abs/physics/0612244v1

Can.J.Phys.85:509-519,2007

Physics

Atomic Physics

13 pages, 16 figures

Scientific paper

10.1139/P07-012

We consider three-loop radiative corrections to the Lamb shift and hyperfine splitting. Corrections of order $\alpha^3(Z\alpha)^5m$ are the largest still unknown contributions to the Lamb shift in hydrogen. We calculated radiative corrections to the Lamb shift and hyperfine splitting generated by the diagrams with insertions of one radiative photon and electron polarization loops in the graphs with two external photons. We also obtained corrections generated by the gauge invariant sets of diagrams with two reducible radiative photon insertions in the electron line and polarization operator insertion in one of the radiative photons, and diagrams with two reducible radiative photon insertions in the electron line and polarization operator insertion in one the external photons. Corrections to the Lamb shift and hyperfine splitting generated by the diagrams with insertions of the three-loop one-particle reducible diagrams with radiative photons in the electron line are calculated in the Yennie gauge.

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