自然线型不对称
Natural line profile asymmetry
摘要：
本文讨论了量子电动力学（QED）中自然产生的光子散射过程的谱线轮廓不对称性。基于对氢原子进行的精密光谱实验，我们主要研究了双光子$1s-2s$跃迁。作为最精确确定的跃迁频率之一，它是光学频率标准的关键支柱，用于确定基本物理常数，测试物理原理和寻找新的基本相互作用的约束。在这项工作中得到的结果表明，需要考虑到自然线轮廓的不对称性在精密光谱实验。
英文摘要：
The paper discusses the line profile asymmetry of the photon scattering process that arises naturally in quantum electrodynamics (QED). Based on precision spectroscopic experiments conducted on hydrogen atoms, we focus our attention on the two-photon $1s-2s$ transition. As one of the most precisely determined transition frequencies, it is a key pillar of optical frequency standards and is used in determining fundamental physical constants, testing physical principles, and searching constraints on new fundamental interactions. The results obtained in this work show the need to take into account the natural line profile asymmetry in precision spectroscopic experiments.
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