GROUND-STATE OF THE NON-HALF-FILLED HUBBARD-MODEL - A RENORMALIZATION-GROUP STUDY

被引：9

作者：

BHATTACHARYYA, B

SIL, S

机构：

来源：

PHYSICS LETTERS A | 1993年 / 180卷 / 03期

关键词：

D O I：

10.1016/0375-9601(93)90715-C

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The real space renormalisation method for the half-filled Hubbard model is extended to the case of the one-dimensional non-half-filled Hubbard model. We have estimated the ground state energy for several filling. This turns out to be in good agreement with the exact results. There is a clear indication that for all non-half-filled cases the energy gap is zero implying that the ground state is metallic; this feature is also in agreement with the exact solution.

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页码：299 / 303

页数：5

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