论文标题
耦合通道系统状态的密度
Density of States of a Coupled-Channel System
论文作者
论文摘要
我们演示了如何从描述耦合通道系统的S-矩阵中得出的有效状态密度。除了极点的位置外，S-Matrix的决定因素的阶段编码了表征共振和非共振相互作用的动力学的基本细节。对两个通道散射问题（$ππ，k \ bar {k} $，s-wave）计算状态密度，并检查了各种动力学结构的影响：杆，根，根，分支切割和riemann板。
We demonstrate how an effective density of states can be derived from the S-matrix describing a coupled-channel system. Besides the locations of poles, the phase of the determinant of the S-matrix encodes essential details in characterizing the dynamics of resonant and non-resonant interactions. The density of states is computed for the two channel scattering problem ($ππ, K \bar{K}$, S-wave), and the influences from the various dynamical structures: poles, roots, branch cuts, and Riemann sheets, are examined.
