对称性逐渐降低时原子光学选择规则的演化
Evolution of atomic optical selection rules upon gradual symmetry lowering
摘要：
对于具有理想对称性的原子和晶体，电子跃迁的光学选择规则在物理教科书中有很好的介绍。然而，在物质系统的研究中，人们经常遇到具有弱扭曲对称性的系统。洞察力和直觉如何光学选择规则的变化时，一个理想的对称性逐渐扭曲，然而，在文献中很少提到。我们在这里提出了一个详细的分析如何逐渐对称性畸变导致一个完整的改变光学选择规则。作为一个模型系统，我们考虑了氢原子的$1s$和$2p$子能级之间的跃迁，这些子能级由于在其环境中放置带电粒子而发生畸变。在增加的失真，部分的光学选择规则演变从圆形通过椭圆形的线性字符，与允许和禁止之间的过渡的相关演变。我们的演讲结合了分析方法与数值模拟的定量结果，从而提供了如何演变发生的扭曲的强度的函数的见解。
英文摘要：
For atoms and crystals with an ideal symmetry, the optical selection rules for electronic transitions are well covered in physics textbooks. However, in studies of material systems one often encounters systems with a weakly distorted symmetry. Insight and intuition for how optical selection rules change when an ideal symmetry is gradually distorted is, nevertheless, little addressed in literature. We present here a detailed analysis of how a gradual symmetry distortion leads to a complete alteration of optical selection rules. As a model system, we consider the transitions between $1s$ and $2p$ sublevels of the hydrogen atom, which get distorted by placing charged particles in its environment. Upon increasing the distortion, part of the optical selection rules evolve from circular via elliptical to linear character, with an associated evolution between allowed and forbidden transitions. Our presentation combines an analytical approach with quantitative results from numerical simulations, thus providing insight in how the evolution occurs as a function of the strength of the distortion.
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。
