SPARC Topical Workshop 2016

The approach for the calculation of the binding energies in highly charged ions is presented. The method merges ab initio QED treatment in the first and second orders of the perturbation theory in the fine-structure constant with the third- and higher-order electron-correlation contributions evaluated within the Breit approximation. The nuclear recoil and nuclear polarization effects are taken...

The ab initio Lamb shift calculations can be performed only for few-electron atomic systems such as H-like, He-like and Li-Like ions and for many-electron atoms in local density approximation (LDA). For this reason the construction of simple one-electron approach to one-loop QED operator is an important task of the relativistic quantum theory of atoms and molecules described by the...