Contribution of negative-energy states to the E2−M1 polarizability of optical clocks

Fang-Fei Wu, Ting-Yun Shi, Wei-Tou Ni, Li-Yan Tang
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Abstract

The authors theoretically investigate the impact of Dirac negative-energy states on the $E$2 and $M$1 polarizabilities in optical clocks. They demonstrate the importance of negative-energy states for the $M$1 polarizability and resolve the sign inconsistency between the theoretical calculations and experimental measurements in the $E$2-$M$1 polarizability difference of the Sr clock.
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负能态对光钟E2−M1极化率的贡献
作者从理论上研究了狄拉克负能态对光学钟中E$2和M$1极化率的影响。他们证明了负能态对$M$1极化率的重要性,并解决了Sr时钟$E$2-$M$1极化率差的理论计算和实验测量之间的符号不一致。
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