THE SPIN REVERSAL SYMMETRY OF THE GROUND-STATE OF THE HALF-FILLED HUBBARD-MODEL

被引：0
|
作者：
SONG, Z [1 ]
SHEN, H [1 ]
机构：
[1] NANKAI UNIV,DEPT PHYS,TIANJIN 300071,PEOPLES R CHINA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 07期
关键词：
D O I：
10.1088/0953-8984/6/7/010
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using a method based on Lieb's theorems and SU(2) symmetry for the half-filled Hubbard model on a bipartite lattice with Absolute value of A = Absolute value of B = N (where Absolute value of A (Absolute value of B) is the number of sites in the A (B) sublattice), we show that the ground-state wave function has even (odd) symmetry with respect to the spin reversal operator when N is even (odd) for both U > 0 and U < 0 cases. These rigorous results hold in all dimensions without the necessity for a periodic boundary condition.
引用
收藏
页码：1395 / 1398
页数：4
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