EPJD Topical Issue - Precision Physics of Simple Atomic Systems – 2024
- Details
- Published on 02 September 2025
Topical Issue (TI), “Precision Physics of Simple Atomic Systems”, edited by Paolo Crivelli, Daniel Kienzler, Fabian Schmid, Savely Karshenboim and Vladimir Shabaev.
We are happy to present through this collection, a valuable snapshot of current trends in the precision physics of simple atomic systems and will serve as a reference for researchers exploring fundamental interactions, antimatter, and quantum structure at the highest level of precision.
Simple atomic systems such as hydrogen, positronium, and muonium — as well as light ions and antiprotons — provide clean environments for testing bound state quantum electrodynamics (QED), determining fundamental constants, and probing physics beyond the Standard Model. Advancing in high-precision studies in atomic, molecular, and exotic systems as tools to explore fundamental physics, has been, since 2000, the focus of the PSAS series (launched in 2000 in Castiglione della Pescaia).
This EPJD Topical Collection features 12 peer-reviewed articles based on contributions to the 12th International Conference on Precision Physics of Simple Atomic Systems (PSAS 2024), held in Zurich, Switzerland, from June 10 to 14, 2024 (this edition continued the mission of by PSAS series, fostering collaboration across experimental and theoretical frontiers).
The articles in this collection represent a diverse sample of the scientific highlights from PSAS 2024, covering both established research programs and novel developments. Topics include :
- High-resolution spectroscopy of hydrogen and exotic atoms
- Precision measurements of muonium and muonic helium hyperfine structures
- Cold sources and detection methods for atomic hydrogen
- Theoretical studies of QED effects in bound states and quantum cyclotron levels
- Investigations of antideuterium production and the electric charge neutrality of neutrons
- Two-photon spectroscopy of positronium and muonium
- New methodologies in data analysis and consistency treatment
All articles are available here and are freely accessible until November 5, 2025. For further information read the Editorial.
