INTERACTING-ELECTRON MODEL EXACTLY SOLVABLE IN ANY DIMENSION

被引：30

作者：

MONTORSI, A ^{[1
]}

RASETTI, M ^{[1
]}

机构：

[1] POLITECN TORINO, UNITA IST NAZL FIS MAT, I-10129 TURIN, ITALY

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.66.1383

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

When processes not conserving the double occupation number are inhibited, one obtains a model like the Kivelson-Schrieffer-Su-Heeger extension of the Hubbard model. We solve this model exactly in any number of dimensions. The system free energy is given for any fixed filling. The ground-state energy and double-occupancy order parameter are discussed for d = 2.

引用

页码：1383 / 1387

页数：5

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