Self-energy correction to the two-photon decay width in hydrogenlike atoms

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Abstract

The gage invariance of the leading logarithmic radiative correction to the two-photon decay width in hydrogenlike atoms, was investigated. The effective treatment of the correction using a Lamb-shift led to the equivalent results in both the length and velocity gages. The relevant radiative corrections were found to be related to the energies that entered into the propagator denominators, to the Hamiltonian, to the wave functions, and to the energy conservation condition, that holds between two photons. The results show that the dominant radiative correction to the 2S two-photon decay width is about -2.020 536(α/π)(Zα)21n[(Zα)-2] in units of the nonrelativistic expressions.

Original languageEnglish
Pages (from-to)52118-52111
Number of pages8
JournalPhysical Review A
Volume69
Issue number5 A
DOIs
Publication statusPublished - May 2004

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photons
decay
atoms
energy
gauge invariance
energy conservation
wave functions
propagation
shift

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

Self-energy correction to the two-photon decay width in hydrogenlike atoms. / Jentschura, U.

In: Physical Review A, Vol. 69, No. 5 A, 05.2004, p. 52118-52111.

Research output: Contribution to journalArticle

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