Upcoming and planned experiments combining increasingly intense lasers and energetic
particle beams will access new regimes of nonlinear, relativistic, quantum effects. This …

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 use of high-precision measurements of the g factor of few-electron ions and its isotope
shifts is put forward as a probe for physics beyond the Standard Model. The contribution of a …

A method is proposed to determine the M 1 nuclear transition amplitude and hence the
lifetime of the “nuclear clock transition” between the low-lying (∼ 8 eV) first isomeric state …

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 …

Atomic mass measurements are essential for obtaining several of the fundamental
constants. The most precise atomic mass measurements, at the 10− 10 level of precision or …

When collecting spectroscopic data on at least four isotopes, nonlinearities in the King plot
are a possible sign of physics beyond the standard model. In this work, an improved …

The present status of tests of QED with highly charged ions is reviewed. The theoretical
predictions for the Lamb shift and the transition energies are compared with available …