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Karshenboim, Savely G.; Ivanov, Vladimir G. (2018): Finite-nuclear-size contribution to the g factor of a bound electron: Higher-order effects. In: Physical Review A, Vol. 97, No. 2, 22506
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Abstract

Aprecision comparison of theory and experiments on the g factor of an electron bound in a hydrogenlike ion with a spinless nucleus requires a detailed account of finite-nuclear-size contributions. While the relativistic corrections to the leading finite-size contribution are known, the higher-order effects need an additional consideration. Two results are presented in the paper. One is on the anomalous-magnetic-moment correction to the finite-size effects and the other is due to higher-order effects in Z alpha mR(N). We also present here a method to relate the contributions to the g factor of a bound electron in a hydrogenlike atom to its energy within a nonrelativistic approach.