QED corrections for the valence electron in heavy and super-heavy atoms
The radiative QED corrections for the valence electron of the neutral Rg (Z =111) atom are estimated within the framework of the post-Dirac–Fock method. In this method the Koopmans’ approximation is proposed for the electron propagator in the QED diagrams. Such calculation is done for the first time for this super-heavy atom. These results contribute to the discussion concerning the accuracy of the QED corrections in the super-heavy elements. They also provide the accuracy limit of the modern relativistic theoretical calculations for the super-heavy elements.
Keywords: relativistic and quantum electrodynamic effects in atoms and molecules