Complete two-loop correction to the bound-electron g factor

Pachucki, K.; Czarnecki, A.; Jentschura, Ulrich David; Yerokhin, Vladimir A.

doi:10.1103/PhysRevA.72.022108

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Complete two-loop correction to the bound-electron g factor

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Jentschura, Ulrich David
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Citation

Pachucki, K., Czarnecki, A., Jentschura, U. D., & Yerokhin, V. A. (2005). Complete two-loop correction to the bound-electron g factor. Physical Review A, 72(2): 022108. doi:10.1103/PhysRevA.72.022108.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8868-1

Abstract

Within a systematic approach based on dimensionally regularized nonrelativistic quantum electrodynamics, we derive a complete result for the two-loop correction to order (alpha/pi)2(Zalpha)4 for the g factor of an electron bound in an nS state of a hydrogenlike ion. The results obtained significantly improve the accuracy of the theoretical predictions for the hydrogenlike carbon and oxygen ions and influence the value of the electron mass inferred from g-factor measurements.