论文标题
综合和相关方面的方法
Methods on compositeness and related aspects
论文作者
论文摘要
在许多物理应用中，观察到绑定状态和/或共振，这引发了这些状态是基本还是复合的问题。在这里，我们详细介绍了几种方法，用于计算量子力学的结合状态$ x $，以及通过介绍粒子数量运算符来计算量子力学的共鸣和量子场理论。对于共振，$ x $通常很复杂，我们讨论如何通过使用$ S $矩阵中的某些阶段转换来获得有意义的结果。
In many physical applications, bound states and/or resonances are observed, which raises the question whether these states are elementary or composite. Here we elaborate on several methods for calculating the compositeness $X$ of bound states and resonances in Quantum Mechanics, and in Quantum Field Theory by introducing particle number operators. For resonances $X$ is typically complex and we discuss how to get meaningful results by using certain phase transformations in the $S$ matrix.
