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- W4317463997 abstract "With the improvement of high-precision optical clock, the higher-order multipolar interaction between atoms and light needs quantitative evaluation. However for the Sr clock, the differential dynamic E2-M1 polarizability at the magic wavelength has contradictions among available theoretical and experimental results. Recently, the new experimental measurement of S. D{o}rscher {em et al.} [arXiv: 2210. 14727] is consistent with measurement of Ushijima {em et al.}, which poses new challenges to theory and urgently calls for theoretical explanations. In present work, we investigate contributions of negative-energy states to the E2 and M1 polarizabilities. We find that for the M1 polarizability, the contribution from negative-energy states is crucial and dominant. Our new theoretical result for E2-M1 polarizability difference is $-7.74(3.92)times 10^{-5}$ a.u., which is in good agreement with the recent experiment of S. D{o}rscher et al., so the inconsistency problem of E2-M1 polarizability in the Sr clock between theory and experiment is eliminated." @default.
- W4317463997 created "2023-01-20" @default.
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- W4317463997 date "2023-01-17" @default.
- W4317463997 modified "2023-10-18" @default.
- W4317463997 title "Contributions of negative-energy states to the E2-M1 polarizability of the Sr clock" @default.
- W4317463997 doi "https://doi.org/10.48550/arxiv.2301.06740" @default.
- W4317463997 hasPublicationYear "2023" @default.
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