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g Factor of Lithiumlike Silicon: New Challenge to Bound-State QED.

08:00 EDT 25th October 2019 | BioPortfolio

Summary of "g Factor of Lithiumlike Silicon: New Challenge to Bound-State QED."

The recently established agreement between experiment and theory for the g factors of lithiumlike silicon and calcium ions manifests the most stringent test of the many-electron bound-state quantum electrodynamics (QED) effects in the presence of a magnetic field. In this Letter, we present a significant simultaneous improvement of both theoretical g_{th}=2.000 889 894 4 (34) and experimental g_{exp}=2.000 889 888 45 (14) values of the g factor of lithiumlike silicon ^{28}Si^{11+}. The theoretical precision now is limited by the many-electron two-loop contributions of the bound-state QED. The experimental value is accurate enough to test these contributions on a few percent level.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 173001

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