Rigorous quantum electrodynamics treatment of electron correlations in high-Z ions: beyond the Breit and effective-potential approximations

Authors
Yerokhin, VA Artemyev, AN Shabaev, VM Sysak, MM Zherebtsov, OM Soff, G
Citation
Va. Yerokhin et al., Rigorous quantum electrodynamics treatment of electron correlations in high-Z ions: beyond the Breit and effective-potential approximations, PHIL MAG B, 81(10), 2001, pp. 1547-1555
Citations number
34
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICSELECTRONIC OPTICAL AND MAGNETIC PROPERTIES
ISSN journal
13642812 → ACNP
Volume
81
Issue
10
Year of publication
2001
Pages
1547 - 1555
Database
ISI
SICI code
1364-2812(200110)81:10<1547:RQETOE>2.0.ZU;2-9
Abstract
We discuss the present status of quantum electrodynamics (QED) investigatio ns of electron correlations in second order in a for heavy few-electron ato ms. A complete evaluation of all two-electron QED contributions of order al pha (2) is presented for the 2p(1/2)-2s transition in high-Z Li-like ions. In particular, the two-photon exchange correction beyond the Breit approxim ation is calculated for highly charged ions with Z > 50. The total theoreti cal value of 280.44(9)(20)eV is found for the 2p(1/2)-2s transition energy in Li-like U.