SPIN AND PAIRING ALGEBRAS AND ODLRO IN A HUBBARD-MODEL

被引:46
作者
PERNICI, M
机构
来源
EUROPHYSICS LETTERS | 1990年 / 12卷 / 01期
关键词
D O I
10.1209/0295-5075/12/1/014
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The states of a simple Hubbard model fall into representations of the 8242) spin algebra and of an su(2) pairing algebra. A half-filled band momentum eigenstate has off-diagonal long-range order (ODLRO) if it belongs to an irreducible representation with pairing spin v>(N-s)/3, N being the number of lattice sites and s the spin of the representation. © 1990 IOP Publishing Ltd.
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收藏
页码:75 / 80
页数:6
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