多体关联动力学中的自洽平均场

本文仔细地讨论了量子多体关联动力学中的广义自洽平均场,证明无论动态还是定态自洽平均场都是存在的。多体关联通过两体关联c₂及其相应的碰撞项I进入平均场。I的作用是双重的:对单粒子运动量子态的动力学效应和对单粒子态填充数的影响。多体关联还在多体系统的能量表达式中表现出来,使得该表达式不同于通常的HF-Brueckner理论中的表达式。 关键词：

SELF-CONSISTENT MEAN FIELD IN MANY-BODY CORRELATION DYNAMICS

The self-consistent mean field in the many-body correlation dynamics is discussed in detail. It is shown that the self-consistent mean field exists in general in many-body correlation dynamics for both stationary and non-stationary cases. The many-body correlations enter the mean field through the two-body correlation c₂ and the corresponding collision term I. The role played by I is twofold i.e., dynamical effects and statistical effects on single particle states. The many-body correlations also manifest their effects on the many-body energy and yield an energy expression different from the conventional expression in the HF-Bruc-kner theory.