7 papers · 1 filter
Self-energy corrections to the ionization energies in sodium-like ions: comparison of the \textit{ab initio} QED and model-QED-operator approaches
P. Yang, A. V. Malyshev, E. A. Prokhorchuk +3
Calculations of the self-energy corrections to ionization energies of the , , and states in sodium-like ions with nuclear-charge numbers , , …
Bound-electron self-energy calculations in Feynman and Coulomb gauges: detailed analysis
M. A. Reiter, E. O. Lazarev, D. A. Glazov +2
The energy correction associated with the self-energy diagram is the leading (in magnitude) and fundamental (in significance) contribution to the Lamb shift in highly charged ions.…
QED calculations of intra--shell doubly excited states in Be-like ions
A. V. Malyshev, Y. S. Kozhedub, V. M. Shabaev +1
The rigorous QED approach is employed to calculate the energies of the , , and states of selected Be-like highly charged ions over a w…
Study of atomic effects on electron spectrum in bound-muon decay process
M. Y. Kaygorodov, Y. S. Kozhedub, A. V. Malyshev +3
For the bound-muon decay process, the study of atomic effects on the electron spectrum near its endpoint is performed within the framework of the Fermi effective theory. The analys…
QED calculations of intra--shell singly excited states in Be-like ions
A. V. Malyshev, Y. S. Kozhedub, V. M. Shabaev +1
The \textit{ab initio} approach is used to evaluate the excitation energies of the states from the ground state as well as the $2s2p \, ^3P_1 \rightarrow 2s2p…
Convergence-acceleration approach to partial-wave expansion of two-electron self-energy contributions to the Lamb shift
A. V. Malyshev, E. A. Prokhorchuk, V. M. Shabaev
Methods of bound-state QED that treat the self-energy contributions to the Lamb shift within the partial-wave expansion usually face the problem of slow convergence of the latter.…
Orbital collapse and dual states of the electrons in superheavy elements
I. I. Tupitsyn, I. M. Savelyev, Y. S. Kozhedub +5
The problem of orbital collapse of the and electrons in atoms of superheavy elements (SHE) is considered. Previously, the presence of the orbital collapse was established…