高密度He_4体系的多体相互作用

The Multi-Body Interaction of Dense He_4 Systems

应用原子团簇理论计算了He4体系的短程多体排斥作用,通过对三体势、四体势与原子间距R之间的变化规律的研究,发现按高密度氦物态方程来计算,当R>4.0a0时,四体作用势可忽略,但在R=4.5a0时,三体相互作用势仍不可忽略。

The multi -body repulsive potentials of He, systems in short- distance are calculated with the theory of atomic cluster. It is found out by means of having studied changing laws of the three - body potentials, four- body potentials andR （ the distance between two atomic ） separately, calculated with tile dense Helium physical state equation, when R 〉 4.0 a0 , four - body potentials can be neglected, but when R =4.5 ao , that of the three -body cant as usual.