SOME PROPERTIES OF THE ETA-PAIRING EIGENSTATE IN THE HUBBARD-MODEL

被引：10
作者：
SU, G
GE, ML
ZHAO, BH
机构：
[1] CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA
[2] NANKAI INST MATH,DIV THEORET PHYS,TIANJIN 300071,PEOPLES R CHINA
[3] CHINESE ACAD SCI,GRAD SCH,DEPT PHYS,BEIJING 100039,PEOPLES R CHINA
来源：
PHYSICS LETTERS A | 1991年 / 155卷 / 6-7期
关键词：
D O I：
10.1016/0375-9601(91)91051-E
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Some properties of the eta-pairing eigenstate of the Hubbard model are investigated. It is shown that in the eigenstate the Hubbard model can present a Meissner effect, and the symmetry breaking of the Hubbard system is in analogy to the corresponding case of the Heisenberg ferromagnetic system. It is also found that the eigenstate is a projected state of the usual BCS-like function.
引用
收藏
页码：425 / 428
页数：4
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