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：
3;
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
收藏
页码：1195 / 1196
页数：2
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