双原子复合系统的散射
Scattering of a diatomic composite system
摘要：
研究了δ函数势场中两粒子复合系统的散射问题。利用与时间无关的散射理论，研究了透射/反射系数随外势高度、入射动量和内势强度的变化规律。特别是，我们表明，内部自由度的存在可以显着改变的透射/反射系数，即使没有内部激励。我们考虑两种情况：将入射波的内部自由度设置为奇宇称态和偶宇称态，发现对称哈密顿量对奇宇称态的影响大于对偶宇称态的影响。
英文摘要：
We investigate the scattering problem of a two-particle composite system on a delta-function potential. Using the time independent scattering theory, we study how the transmission/reflection coefficients change with the height of external potential, the incident momentum, and the strength of internal potential. In particular, we show that the existence of internal degree of freedom can significantly change the transmission/reflection coefficients even without internal excitation. We consider two scenarios: the internal degree of freedom of the incident wave is set to be in a state with even parity or odd parity, we find that the influence of a symmetric Hamiltonian is greater on the odd-parity internal states than on the even-parity ones.
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