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arXiv · 1705.04476

Electron-correlation effects in the $g$-factor of light Li-like ions

V. A. Yerokhin·K. Pachucki·M. Puchalski·Z. Harman·C. H. Keitel
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Abstract

We investigate electron-correlation effects in the $g$-factor of the ground state of Li-like ions. Our calculations are performed within the nonrelativistic quantum electrodynamics (NRQED) expansion up to two leading orders in the fine-structure constant $α$, $α^2$ and $α^3$. The dependence of the NRQED results on the nuclear charge number $Z$ is studied and the individual $1/Z$-expansion contributions are identified. Combining the obtained data with the results of the all-order (in $Zα$) calculations performed within the $1/Z$ expansion, we derive the unified theoretical predictions for the $g$-factor of light Li-like ions.

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V. A. Yerokhin, K. Pachucki, M. Puchalski, Z. Harman, C. H. Keitel. 2017-05-12. Electron-correlation effects in the $g$-factor of light Li-like ions. https://doi.org/10.1103/physreva.95.062511

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