QED tests with highly-charged ions

Abstract

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 is presented, as well as methods to evaluate many-body effects that cannot beevaluated with present-day QED calculations. Experimental methods, their evolution over time, as well as progress in accuracy are presented. A detailed, quantitative, comparison between theory and experiment is presented for transition energies in few-electron ions. In particular the impact of the nuclear size correction on the quality of QED tests as a function of the atomic number is discussed.The cases of hyperfine transition energies and of bound-electron Land{é} $g$-factor are also considered.

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• Benchmarking Many-body Approaches for the Determination of Isotope Shift Constants: Application to the Li, Be${}^{+}$ and Ar${}^{15+}$ Isoelectronic Systems
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• Ab initio QED calculations in diatomic quasimolecules
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• High precision X-ray spectroscopy of kaonic neon
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• Reference Quadrupole Moments of Transition Elements from Lamb Shifts in Muonic Atoms
• Insight into the prospective evaluation of third-order interelectronic corrections on Li-like ions
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