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应用超纲链方法讨论均匀费密子系统的多体效应时常用无规相近似和选取原始波函数为费密球分布的波函数。本文讨论这种做法的适用性,给出其适用范围与势的性质和密度的关系。In discussion of the many body effect of homogenenus Fermion system with hypernetted chain method, RPA is always applied and original wave function is taken as a Fermi sphere distribution function. In this paper, the validity of this method is investigated and the relation between the valid range of this method and the properties of potential and density is obtained.
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