SYMMETRY-BREAKING IN THE HUBBARD-MODEL AT ZERO TEMPERATURE

被引：2
|
作者：
SU, G [1 ]
机构：
[1] ACAD SINICA,GRAD SCH,DEPT PHYS,BEIJING 100039,PEOPLES R CHINA
来源：
PHYSICAL REVIEW B | 1993年 / 47卷 / 05期
关键词：
D O I：
10.1103/PhysRevB.47.2901
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It is shown within the pseudospin framework that the U(1) phase symmetry and the pseudospin SU(2) symmetry in the Hubbard model at zero temperature are spontaneously broken away from half filling, which implies that the Hubbard model probably possesses some massless Goldstone bosons in its ground state.
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页码：2901 / 2904
页数：4
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