PERTURBATIVE EXPANSION FOR THE P-D MODEL AROUND THE HOPPING TERM

被引：0

作者：

NOCE, C ^{[1
]}

ROMANO, A ^{[1
]}

MANCINI, F ^{[1
]}

MARINARO, M ^{[1
]}

机构：

[1] UNIV SALERNO,SMSA,I-84081 BARONISSI,ITALY

来源：

PHYSICA B | 1994年 / 194卷 / pt 1期

关键词：

D O I：

10.1016/0921-4526(94)90927-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A non-standard perturbative solution of the p-d model around the hopping term, based on a generalized cumulant expansion, is proposed. Starting from the expression of the irreducible single-site Green functions, the Dyson equation for the one-particle propagators is obtained. A qualitative comparison with similar perturbative approaches is discussed.

引用

页码：1195 / 1196

页数：2

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