QED with heavy ions: On the way from strong to supercritical fields

Результат исследований: Научные публикации в периодических изданияхстатья в журнале по материалам конференциирецензирование

Аннотация

The current status of tests of quantum electrodynamics with heavy ions is reviewed. The theoretical predictions for the Lamb shift and the hyperfine splitting in heavy ions are compared with available experimental data. Recent achievements and future prospects in studies of the g factor with highly charged ions are also reported. These studies can provide precise determination of the fundamental constants and tests of QED within and beyond the Furry picture at the strong-coupling regime. Theoretical calculations of the electron-positron pair creation probabilities in low-energy heavy-ion collisions are also considered. Special attention is paid to tests of QED in supercritical-field regime, which can be accessed in slow collisions of two bare nuclei with the total charge number larger than the critical value, Zcrit ≈ 173. In the supercritical field, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. It is demonstrated that this fundamental phenomenon can be observed via impact-sensitive measurements of the pair-production probabilities.

Язык оригиналаанглийский
Номер статьи052
ЖурналProceedings of Science
Том353
СостояниеОпубликовано - 18 фев 2020
Событие2019 International Conference on Precision Physics and Fundamental Physical Constants, FFK 2019 - Tihany, Венгрия
Продолжительность: 9 июн 201914 июн 2019

Предметные области Scopus

  • Атомная и молекулярная физика и оптика

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