标题： 本征相移和本征时间延迟中贝特勒-范公式识别近共振区 显示英文标题

标题： Identification of the Beutler-Fano formula in eigenphase shifts and eigentime delays near a resonance

摘要： 近似共振处一个离散态和两个连续态系统的本征相移和本征时间延迟被证明是Beutler-Fano公式的泛函，使用适当无量纲的能量单位和线型轮廓指数。 导致本征相移和本征时间延迟避免交叉的参数被识别出来。 同样，导致由于框架变化引起本征时间延迟的参数也被识别出来。 借助新的参数，对S矩阵和时间延迟矩阵与自旋模型进行了类比。 时间延迟矩阵被证明由三项组成，一项源于共振，一项源于避免交叉相互作用，一项源于框架变化。 发现由于避免交叉相互作用和框架变化引起的时间延迟的平方和为1。 显示英文摘要

摘要： Eigenphase shifts and eigentime delays near a resonance for a system of one discrete state and two continua are shown to be functionals of the Beutler- Fano formulas using appropriate dimensionless energy units and line profile indices. Parameters responsible for the avoided crossing of eigenphase shifts and eigentime delays are identified. Similarly, parameters responsible for the eigentime delays due to a frame change are identified. With the help of new parameters, an analogy with the spin model is pursued for the S matrix and time delay matrix. The time delay matrix is shown to comprise three terms, one due to resonance, one due to a avoided crossing interaction, and one due to a frame change. It is found that the squared sum of time delays due to the avoided crossing interaction and frame change is unity.