摘要
本文采用相关基波函数(CBF)方法研究了二维~3He液体的性质。基于集团展开利用配分函数的变分原理,将这一方法推广到有限温度情形。从Lennard-Jones势出发,在二级微扰近似下数值计算了二维~3He液体的基态能、准粒子谱和朗道参数。
2-D liquid ~3He is studied using the method of correlated basis functions (CBF). The cluster expansion technique is extended to treat finite temperature systems based on variational principle for the partition function. Adopting a Lennard-Jones potential, the ground state energy, quasi-particle energies and the Landau parameters are evaluated to the second order.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第4期572-579,共8页
Acta Physica Sinica