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A: Fachverband Atomphysik
A 9: Precision Spectroscopy II
A 9.8: Vortrag
Montag, 6. März 2017, 18:45–19:00, N 3
High-precision theory of the bound-electron g-factor — •Bastian Sikora1, Nikolay A. Belov1, Natalia S. Oreshkina1, Vladimir A. Yerokhin2, Christoph H. Keitel1, and Zoltán Harman1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2Center for Advanced Studies, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
The g-factor of bound electrons in H-like ions can be measured and calculated with high accuracy. Comparison between the theoretical and experimental values of the bound-electron g-factor allows precision tests of QED and the determination of fundamental constants such as the electron mass or the fine-structure constant α [1].
In order to achieve a high accuracy in theoretical predictions of the bound-electron g-factor in high nuclear charge states, the interaction with the nuclear potential needs to be taken into account to all orders in Z α. We present all-order evaluations of QED contributions to the bound-electron g-factor such as two-loop corrections and the muonic vacuum polarization contribution [2]. – [1] V. A. Yerokhin, E. Berseneva, Z. Harman, et al., PRL 116:100801 (2016) [2] N. A. Belov, B. Sikora, R. Weis, et al., submitted; arXiv:1610.01340 (2016).