Corrections to Hyperfine Splitting and Lamb Shift Induced by the Overlapping Two-loop Electron Self-energy Insertion in the Electron Line
نویسندگان
چکیده
Contributions to HFS and to the Lamb shift intervals of order α(Zα) induced by the graph with the two-loop overlapping electron self-energy diagram inserted in the electron line are considered. Explicit expression for the overlapping two-loop self-energy diagram in the Fried-Yennie gauge is obtained. Contributions both to HFS and Lamb shift induced by the diagram containing such subgraph are calculated.
منابع مشابه
Corrections of Order Α(zα) to Hyperfine Splitting and Lamb Shift
Corrections to hyperfine splitting and Lamb shift of order α(Zα) induced by the diagrams with radiative photon insertions in the electron line are calculated in the Fried-Yennie gauge. These contributions are as large as −7.725(3)α(Zα)/(πn)(mr/m) m and −0.6711(7)α(Zα)/(πn)EF for the Lamb shift and hyperfine splitting, respectively. Phenomenological implications of these results are discussed wi...
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