EXACT RESULTS FOR THE U = INFINITY HUBBARD-MODEL

被引：38

作者：

TRUGMAN, SA

机构：

[1] Theoretical Division, Los Alamos National Laboratory, Los Alamos

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.42.6612

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Several rigorous results are obtained for the U= Hubbard model, including a lower bound on the energy for any finite number of holes relative to half filling. The bound implies that the ferromagnetic state becomes asymptotically degenerate with the exact ground state in the thermodynamic limit, and that added holes do not form bound states. An alternate derivation of Nagaokas theorem is obtained. © 1990 The American Physical Society.

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页码：6612 / 6613

页数：2

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