Stringent test of QED with hydrogen-like tin

Morgner, J.; Tu, B.; König., C. M.; Sailer, T.; Heiße, F.; Bekker, H.; Sikora, B.; Lyu, C.; Yerokhin, V. A.; Harman, Z.; Crespo López-Urrutia, J. R.; Keitel, C. H.; Sturm, S.; Blaum, K.

doi:10.1038/s41586-023-06453-2

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Stringent test of QED with hydrogen-like tin

MPG-Autoren

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Morgner, J.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Tu, B.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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König., C. M.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Sailer, T.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Heiße, F.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Sikora, B.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Lyu, C.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Yerokhin, V. A.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Harman, Z.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Crespo López-Urrutia, J. R.
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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

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Sturm, S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum, K.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen

https://www.nature.com/articles/s41586-023-06453-2.pdf
(Verlagsversion)

https://www.mpi-hd.mpg.de/mpi/en/public-relations/news/news-item/default-f8f80f9f8f
(Ergänzendes Material)

https://www.mpi-hd.mpg.de/mpi/de/nachrichten/nachricht/default-f8f80f9f8f
(Ergänzendes Material)

https://www.mpg.de/20922980/precise-testing-of-quantum-electrodynamics
(Ergänzendes Material)

https://www.mpg.de/20920453/quantenelektrodynamik-auf-dem-prufstand
(Ergänzendes Material)

https://www.nature.com/articles/d41586-023-02620-7
(Ergänzendes Material)

https://phys.org/news/2023-10-precise-quantum-electrodynamics-factor-electrons.html
(Ergänzendes Material)

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Zitation

Morgner, J., Tu, B., König., C. M., Sailer, T., Heiße, F., Bekker, H., et al. (2023). Stringent test of QED with hydrogen-like tin. Nature, 622, 53-57. doi:10.1038/s41586-023-06453-2.

Zitierlink: https://hdl.handle.net/21.11116/0000-000D-C4D9-1

Zusammenfassung

Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond 10¹⁵ V cm⁻¹ for the innermost electrons. Especially in few-electron, highly charged ions, the interaction with the electromagnetic fields can be accurately calculated within quantum electrodynamics (QED), rendering these ions good candidates to test the validity of QED in strong fields. Consequently, their Lamb shifts were intensively studied in the past several decades. Another approach is the measurement of gyromagnetic factors (g factors) in highly charged ions. However, so far, either experimental accuracy or small field strength in low-Z ions limited the stringency of these QED tests. Here we report on our high-precision, high-field test of QED in hydrogen-like ¹¹⁸Sn⁴⁹⁺. The highly charged ions were produced with the Heidelberg electron beam ion trap (EBIT) and injected into the ALPHATRAP Penning-trap setup, in which the bound-electron g factor was measured with a precision of 0.5 parts per billion (ppb). For comparison, we present state-of-the-art theory calculations, which together test the underlying QED to about 0.012%, yielding a stringent test in the strong-field regime. With this measurement, we challenge the best tests by means of the Lamb shift and, with anticipated advances in the g-factor theory, surpass them by more than an order of magnitude.