The current status of bound state quantum electrodynamics calculations of transition
energies for few-electron ions is reviewed. Evaluation of one and two body QED correction …

Recent progress in quantum electrodynamics (QED) calculations of highly charged ions is
reviewed. The theoretical predictions for the binding energies, the hyperfine splittings, and …

A model operator approach to calculations of the QED corrections to energy levels in
relativistic many-electron atomic systems is developed. The model Lamb shift operator is …

The g factor of lithiumlike silicon Si 11+ 28 has been measured in a triple-Penning trap with
a relative uncertainty of 1.1× 10-9 to be g exp⁡= 2.000 889 889 9 (21). The theoretical …

We have measured the ground-state g factor of boronlike argon Ar 40 13+ with a fractional
uncertainty of 1.4× 10-9 with a single ion in the newly developed Alphatrap double Penning …

Within a systematic approach based on dimensionally regularized nonrelativistic quantum
electrodynamics, we derive a complete result for the two-loop correction to order (α∕ π) 2 (Z …

A possibility for a determination of the fine structure constant in experiments on the bound-
electron g-factor is examined. It is found that studying a specific difference of the g-factors of …

A weighted difference of the g factors of the H-and Li-like ions of the same element is
theoretically studied and optimized in order to maximize the cancellation of nuclear effects …

Spin and valley-orbit splittings are calculated in symmetric Si Ge∕ Si∕ Si Ge quantum wells
(QWs) by using the tight-binding approach. In accordance with the symmetry considerations …

We review and expand on previous work that treats relaxation physics of low-lying excited
states in ideal, single-electron, silicon quantum dots in the context of quantum computing …