Complete two-loop correction to the bound-electron factor

Krzysztof Pachucki, Andrzej Czarnecki, Ulrich D. Jentschura, Vladimir A. Yerokhin

Research output: Contribution to journalArticle

112 Citations (Scopus)


Within a systematic approach based on dimensionally regularized nonrelativistic quantum electrodynamics, we derive a complete result for the two-loop correction to order (bullet 2(b1)4 for the factor of an electron bound in an state of a hydrogenlike ion. The results obtained significantly improve the accuracy of the theoretical predictions for the hydrogenlike carbon and oxygen ions and influence the value of the electron mass inferred from par-factor measurements.

Original languageEnglish
Article number022108
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
Publication statusPublished - Aug 1 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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