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 …

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 magnetic moment μ of a bound electron, generally expressed by the g-factor μ=− g μ B s
ħ− 1 with μ B the Bohr magneton and s the electron's spin, can be calculated by bound-state …

The ALPHATRAP experiment at the Max-Planck Institute for Nuclear Physics in Heidelberg
aims at probing the validity of quantum electrodynamics in extremely strong electromagnetic …

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 …

The Dirac–Coulomb equation with positive-energy projection is solved using explicitly
correlated Gaussian functions. The algorithm and computational procedure aims for a parts …

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 …

The recently established agreement between experiment and theory for the g factors of
lithiumlike silicon and calcium ions manifests the most stringent test of the many-electron …

The triplet contribution is computed to the 1 and 2 S 0 e 1 states of the He atom, to the 1 S 0
e 1 state of the Li+ and Be 2+ ions, and to the X 1 Σ g+ ground state of the H 2 molecule by …