Two-Loop QED Bound-State Calculations and Squared Decay Rates

Author

Ulrich D. Jentschura, Missouri University of Science and TechnologyFollow
Christoph H. Keitel
Krzysztof Pachucki

Abstract

We discuss the ε method as used in various recent QED bound-state calculations by considering mathematical-model examples. Recently obtained results for higher order self-energy binding corrections at the two-loop level are reviewed. Problems associated with the interpretation of squared decay rates as radiative bound-state energy-level shifts are discussed. We briefly expand on the relation of squared decay rates to nonresonant and radiative corrections to the Lorentzian line shape, including their dependence on the experimental process under study.

Recommended Citation

U. D. Jentschura et al., "Two-Loop QED Bound-State Calculations and Squared Decay Rates," Canadian Journal of Physics, vol. 80, no. 11, pp. 1213 - 1223, National Research Council of Canada, Nov 2002.

The definitive version is available at https://doi.org/10.1139/p02-081

Department(s)

Physics

International Standard Serial Number (ISSN)

0008-4204

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 National Research Council of Canada, All rights reserved.

Publication Date

01 Nov 2002