Evaluation of two-photon exchange graphs for highly charged heliumlike ions
- 1 October 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 48 (4) , 2615-2626
- https://doi.org/10.1103/physreva.48.2615
Abstract
Contributions of one-loop ladder and crossed-ladder graphs to the ground-state energy of heliumlike ions are calculated in Furry representation QED. With the aid of a contour rotation, the graphs are evaluated to all orders in Zα in the range Z=10–110. Particular attention is given to the relation of this work to recent many-body perturbation theory and configuration-interaction calculations.Keywords
This publication has 24 references indexed in Scilit:
- Relativistic many-body perturbation theory applied ton=2 triplet states of heliumlike ionsPhysical Review A, 1992
- Many-body perturbation-theory calculations of energy levels along the copper isoelectronic sequencePhysical Review A, 1990
- Many-body perturbation-theory calculations of energy levels along the sodium isoelectronic sequencePhysical Review A, 1988
- Many-body perturbation-theory calculations of energy levels along the lithium isoelectronic sequencePhysical Review A, 1988
- Contribution of three-body potentials to the binding energy of heavy atomsJournal of Physics B: Atomic and Molecular Physics, 1986
- Configuration-Space Hamiltonian for Heavy Atoms and Correction to the Breit InteractionPhysical Review A, 1972
- A Relativistic Equation for Bound-State ProblemsPhysical Review B, 1951
- On the interaction of two electronsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951
- On the Green’s functions of quantized fields. IProceedings of the National Academy of Sciences, 1951
- The Effect of Retardation on the Interaction of Two ElectronsPhysical Review B, 1929