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arXiv physics/0011008physics.atom-ph
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2 P态Lamb位移的高阶束缚修正

Higher-order binding corrections to the Lamb shift of 2P states

U. D. Jentschura, K. Pachucki

摘要:

本文提出了一种改进的计算方法,计算了小核电荷Z的类氢系统2 P单圈自能。该方法基于相对于光子能量的积分划分为高能量部分和低能量部分。高能量的部分计算的库仑场的幂的电子传播的扩展。低能量部分被简化的应用程序的Foldy-Wouthuysen变换。这种转换导致相对论修正的主导贡献的明确分离,并删除高阶项。该方法适用于2 P_{1/2}和2 P_{3/2}态的氢原子。结果导致新的理论值的兰姆位移和精细结构分裂。

英文摘要:

We present an improved calculation of higher-order corrections to the one-loop self energy of 2P states in hydrogen-like systems with small nuclear charge Z. The method is based on a division of the integration with respect to the photon energy into a high- and a low-energy part. The high-energy part is calculated by an expansion of the electron propagator in powers of the Coulomb field. The low-energy part is simplified by the application of a Foldy-Wouthuysen transformation. This transformation leads to a clear separation of the leading contribution from the relativistic corrections and removes higher order terms. The method is applied to the 2P_{1/2} and 2P_{3/2} states in atomic hydrogen. The results lead to new theoretical values for the Lamb shifts and the fine structure splitting.

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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