论文标题
在低能量的三个或四个中子的低能量增强状态的非共振密度
Non-resonant Density of States Enhancement at Low Energies for Three or Four Neutrons
论文作者
论文摘要
在绝热的超球形框架内处理三个或四个中子的低能系统，从绝热势能曲线方面得出了对低能量子状态的理解。每个系统的主要低能电势曲线，在这里使用有或不包含三核力力的广泛接受的核子核子相互作用进行计算，没有显示低能量共振的迹象。但是，这两个系统均表现出低能量增强状态的密度或Wigner-Smith Time-delay的能量，后者源自类似于Efimov效应的远程通用物理学。这种增强可能与理解Kisamori等人在核反应中实验观察到的相关4中子射血事件的低能量过量有关。
The low energy systems of three or four neutrons are treated within the adiabatic hyperspherical framework, yielding an understanding of the low energy quantum states in terms of an adiabatic potential energy curve. The dominant low energy potential curve for each system, computed here using widely accepted nucleon-nucleon interactions with and without the inclusion of a three-nucleon force, shows no sign of a low energy resonance. However, both systems exhibit a low energy enhancement of the density of states, or of the Wigner-Smith time-delay, which derives from long-range universal physics analogous to the Efimov effect. That enhancement could be relevant to understanding the low energy excess of correlated 4-neutron ejection events observed experimentally in a nuclear reaction by Kisamori et al.
