【摘要】 本文利用二维电子气的集体振荡行为和静态结构因子确定了体系的多体波函数,同时在坐标空间中建立了关联函数g(R)的积分方程,从而给出了一种计算二维电子气的多体波函数、关联函数和关联能的新方法。本方法可保证对任意的r_s关联函数恒为正,避免了其他方法中在r_s较大时出现g(0)<0的不合理结果,并为研究低温下二维电子体系的特殊性质提供了一个合理基础。更多还原

【Abstract】 The many-body wave function of a 2-d electron system is determined by using the collective oscillation behavior and the static structure factor, and an integral equation for correlation function g(R) is established in real space. In this way we have developed a new method for calculating many-body wave function, correlation function and correlatioin energy of the 2-d electron system, Our method ensures the correlation functions to be positively definite for any γs. Thus it corrects the unphysical results of g(O) <0 for large γs obtained in other approaches and provides an advisable foundation for the study of some special features of 2-d electron systems at low temperature.更多还原