Techniques in Analytic Lamb Shift Calculations

Details Techniques in Analytic Lamb Shift Calculations Techniques in Analytic Lamb Shift Calculations

2005-09-16

arxiv.org/abs/physics/0509143v1

Mod.Phys.Lett. A20 (2005) 2261-2276

Physics

Atomic Physics

16 pages, LaTeX

Scientific paper

10.1142/S0217732305018256

Quantum electrodynamics has been the first theory to emerge from the ideas of regularization and renormalization, and the coupling of the fermions to the virtual excitations of the electromagnetic field. Today, bound-state quantum electrodynamics provides us with accurate theoretical predictions for the transition energies relevant to simple atomic systems, and steady theoretical progress relies on advances in calculational techniques, as well as numerical algorithms. In this brief review, we discuss one particular aspect connected with the recent progress: the evaluation of relativistic corrections to the one-loop bound-state self-energy in a hydrogenlike ion of low nuclear charge number, for excited non-S states, up to the order of alpha (Zalpha)^6 in units of the electron mass. A few details of calculations formerly reported in the literature are discussed, and results for 6F, 7F, 6G and 7G states are given.

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