Phys. Rev. A 63, 040501(R) (2001) [4 pages]

Contribution of the screened self-energy to the Lamb shift of quasidegenerate states

Abstract

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Éric-Olivier Le Bigot^*, Paul Indelicato^†, and Vladimir M. Shabaev^‡
Laboratoire Kastler-Brossel, Case 74, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France

Received 16 November 2000; published 19 March 2001

Expressions for the effective quantum electrodynamics Hamiltonian due to self-energy screening (self-energy correction to the electron-electron interaction) are presented. We use the method of the two-time Green’s function, which handles quasidegenerate atomic states. From these expressions one can evaluate energy corrections to, e.g., 1s2p³P₁ and 1s2p¹P₁ in helium and two-electron ions, to all orders in Zα.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.63.040501

DOI:

10.1103/PhysRevA.63.040501

PACS:

31.30.Jv, 31.15.Ar

^*Email address: lebigot@spectro.jussieu.fr

^†Email address: paul@spectro.jussieu.fr

^‡Permanent address: Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198904, Russia.

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Phys. Rev. A 63, 040501(R) (2001) [4 pages]

Contribution of the screened self-energy to the Lamb shift of quasidegenerate states