8 citations · 9 across the 3 of their papers we have counts for
3 papers
physics.atom-ph2023
Insight into the prospective evaluation of third-order interelectronic corrections on Li-like ions
R. N. Soguel, S. Fritzsche
Relying on the redefined vacuum state approach, and based on one-particle three-loop Feynman diagrams, partial third-order interelectronic corrections to the valence electron energ…
physics.atom-ph2022★ 8 cited
Redefined vacuum approach and gauge-invariant subsets in two-photon-exchange diagrams for a closed-shell system with a valence electron
R. N. Soguel, A. V. Volotka, E. V. Tryapitsyna +3
The two-photon-exchange diagrams for atoms with single valence electrons are investigated. Calculation formulas are derived for an arbitrary state within the rigorous bound-state Q…
physics.atom-ph2022★ 1 cited
QED approach to valence-hole excitation in closed shell systems
R. N. Soguel, A. V. Volotka, S. Fritzsche
An ab initio QED approach to treat a valence-hole excitation in closed shell systems is developed in the framework of the two-time-Green function method. The derivation considers a…