This article reviews recent developments in tests of fundamental physics using atoms and
molecules, including the subjects of parity violation, searches for permanent electric dipole …

Recent developments in frequency metrology and optical clocks have been based on
electronic transitions in atoms and singly charged ions as references. The control over all …

Many powerful tests of the standard model of particle physics and searches for new physics
with precision atomic spectroscopy are hindered by our lack of knowledge of nuclear …

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 …

Storage rings have been employed over three decades in various kinds of nuclear and
atomic physics experiments with highly charged ions. Storage ring operation and precision …

Electrons bound in highly charged heavy ions such as hydrogen-like bismuth 209Bi82+
experience electromagnetic fields that are a million times stronger than in light atoms …

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 …

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 …

A recent measurement of the hyperfine splitting in the ground state of Li-like Bi 208 80+ has
established a “hyperfine puzzle”—the experimental result exhibits a 7 σ deviation from the …

Abstract The Gamma Factory initiative proposes to develop novel research tools at CERN by
producing, accelerating, and storing highly relativistic, partially stripped ion beams in the …