51 citations · 222 across the 12 of their papers we have counts for
13 papers
A QED Functional Formulation of Relativistic Many-Body Perturbation Theory in Atoms
Cedric de Jonge, Zoltán Harman
We systematically derive relativistic many-body perturbation theory (RMBPT) from the two-particle irreducible effective action of quantum electrodynamics (QED) in the Furry picture…
Wichmann-Kroll Correction to the Interelectronic Interaction in He- and Li-Like Ions
J. Sommerfeldt, V. A. Yerokhin, Z. Harman +1
We present a theoretical study of the higher-order QED contribution to the interelectronic interaction in He- and Li-like ions, where a virtual electron-positron loop is inserted i…
Two-loop electron self-energy for low nuclear charges
V. A. Yerokhin, Z. Harman, C. H. Keitel
Calculations of the two-loop electron self-energy for the Lamb shift are reported, performed to all orders in the nuclear binding strength parameter (where is the nuc…
Improved bound-electron g-factor theory through complete two-loop QED calculations
Bastian Sikora, Vladimir A. Yerokhin, Christoph H. Keitel +1
The two-loop self-energy correction to the bound-electron -factor in hydrogenlike ions is investigated, taking into account the electron-nucleus interaction exactly. This all-or…
Nuclear magnetic shielding in heliumlike ions
Vladimir A. Yerokhin, Krzysztof Pachucki, Zoltán Harman +1
Ab initio QED calculations of the nuclear magnetic shielding constant in helium-like ions are presented. We combine the nonrelativistic QED approach based on an expansion in powers…
Self-energy screening effects in the factor of Li-like ions
V. A. Yerokhin, K. Pachucki, M. Puchalski +2
We report an investigation of the self-energy screening effects for the factor of the ground state of Li-like ions. The leading screening contribution of the relative order $1/…
Resonance fluorescence in the resolvent operator formalism
V. Debierre, Z. Harman
The Mollow spectrum for the light scattered by a driven two-level atom is derived in the resolvent operator formalism. The derivation is based on the construction of a master equat…
Electron-correlation effects in the -factor of light Li-like ions
V. A. Yerokhin, K. Pachucki, M. Puchalski +2
We investigate electron-correlation effects in the -factor of the ground state of Li-like ions. Our calculations are performed within the nonrelativistic quantum electrodynamics…
Extraction of the electron mass from factor measurements on light hydrogenlike ions
J. Zatorski, B. Sikora, S. G. Karshenboim +5
The determination of the electron mass from Penning-trap measurements with C ions and from theoretical results for the bound-electron factor is described in detai…
Muonic vacuum polarization correction to the bound-electron -factor
N. A. Belov, B. Sikora, R. Weis +5
The muonic vacuum polarization contribution to the -factor of the electron bound in a nuclear potential is investigated theoretically. The electric as well as the magnetic loop…
State-Selective High-Energy Excitation of Nuclei by Resonant Positron Annihilation
N. A. Belov, Z. Harman
In the annihilation of a positron with a bound atomic electron, the virtual gamma photon created may excite the atomic nucleus. We put forward this effect as a spectroscopic tool f…
Resonance fluorescence in ultrafast and intense x-ray free-electron-laser pulses
S. M. Cavaletto, C. Buth, Z. Harman +4
The spectrum of resonance fluorescence is calculated for a two-level system excited by an intense, ultrashort x-ray pulse made available for instance by free-electron lasers such a…
Two-loop QED corrections with closed fermion loops
V. A. Yerokhin, P. Indelicato, V. M. Shabaev
We report a calculation of all two-loop QED corrections with closed fermion loops for the n=1 and n=2 states of H-like ions and for a wide range of the nuclear charge numbers Z=1-1…