Microscopic electron models with exact SO(5) symmetry

被引：52

作者：

Rabello, S ^{[1
]}

Kohno, H

Demler, E

Zhang, SC

机构：

[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[2] Univ Tokyo, Dept Phys, Tokyo 113, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 16期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.80.3586

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We construct a class of microscopic electron models with exact SO(5) symmetry between antiferromagnetic and d-wave superconducting ground states. There is an exact one-to-one correspondence between both single-particle and collective excitations in both phases. SO(5) symmetry breaking terms can be introduced and classified according to irreducible representation uf the exact SO(5) algebra. The resulting phase diagram and collective modes are identical to that of the SO(5) nonlinear sigma model.

引用

页码：3586 / 3589

页数：4

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