Two-loop bethe logarithms for higher excited S levels

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Abstract

The Two-Loop logarithms for higher excited S levels were investigated. It was observed that the processes mediated by two low-energy photons contributed quite significantly to the energy of hydrogenic S states. It was also observed the approach to the higher excited S states, which in contrast to the 1S and 2S states could decay to P states via the electric-dipole channel. It was found that in addition to the calculation of the excited-states two-loop energy shift, the ambiguity in the energy level definition was also investigated due to squared decay rates.

Original languageEnglish
Article number052108
Pages (from-to)052108-1-052108-13
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume70
Issue number5 A
DOIs
Publication statusPublished - Nov 1 2004

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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