Exact two-loop vacuum polarization correctionto the Lamb shift in hydrogen-like ions

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dc.creatorPlunien, G.
dc.creatorBeier, T.
dc.creatorSoff, G.
dc.creatorPersson, H.
dc.date1997-07-03
dc.date.accessioned2026-07-07T06:14:20Z
dc.date.available2026-07-07T06:14:20Z
dc.descriptionWe present a calculation scheme for the two-loop vacuum polarization correction of order $α^2$ to the Lamb shift of hydrogen-like high-Z atoms. The interaction with the external Coulomb field is taken into account to all orders in $(Zα)$. By means of a modified potential approach the problem is reduced to the evaluation of effective one-loop vacuum polarization potentials. An expression for the energy shift is deduced within the framework of partial wave decomposition performing appropriate subtractions. Exact results for the two-loop vacuum polarization contribution to the Lamb shift of K- and L-shell electron states in hydrogen-like Lead and Uranium are presented.
dc.description23 pages, LaTeX (RevTeX), 5 eps-figures
dc.identifierhttps://arxiv.org/abs/quant-ph/9707008
dc.identifierhttp://arxiv.org/abs/quant-ph/9707008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/93424
dc.subjectQuantum Physics
dc.titleExact two-loop vacuum polarization correctionto the Lamb shift in hydrogen-like ions
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