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arXiv 2006.08284physics.atom-ph
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类锂离子$g$因子中的自能屏蔽效应

Self-energy screening effects in the $g$ factor of Li-like ions

V. A. Yerokhin, K. Pachucki, M. Puchalski, C. H. Keitel, Z. Harman

摘要:

研究了类锂离子基态的$g$因子的自能屏蔽效应。计算结合核强度参数$Zα$(其中$Z$是核电荷数,$α$是精细结构常数)中所有级的相对级$1/Z$的主导屏蔽贡献。我们还通过导出$α^5\lnα$阶的主要对数贡献和获得$α^5$和$α^6$贡献的近似结果,扩展了QED屏蔽校正的$Zα$展开的已知结果。这两种方法的比较产生了严格的检查两个计算的一致性,并使我们能够获得更高的阶筛选效果的改进估计。

英文摘要:

We report an investigation of the self-energy screening effects for the $g$ factor of the ground state of Li-like ions. The leading screening contribution of the relative order $1/Z$ is calculated to all orders in the binding nuclear strength parameter $Zα$ (where $Z$ is the nuclear charge number and $α$ is the fine-structure constant). We also extend the known results for the $Zα$ expansion of the QED screening correction by deriving the leading logarithmic contribution of order $α^5\lnα$ and obtaining approximate results for the $α^5$ and $α^6$ contributions. The comparison of the two approaches yields a stringent check of consistency of the two calculations and allows us to obtain improved estimations of the higher-order screening effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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