EXACT RESULTS FOR A HUBBARD CHAIN WITH LONG-RANGE HOPPING

被引：73
|
作者：
GEBHARD, F
RUCKENSTEIN, AE
机构：
[1] Serin Physics Laboratory, Rutgers University, Piscataway, NJ 08855-0849
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 02期
关键词：
D O I：
10.1103/PhysRevLett.68.244
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We give the exact spectrum and thermodynamics for a long-range hopping Hubbard chain with linear dispersion. This model exhibits a Mott-Hubbard metal-insulator transition at half filling when the interaction strength U equals the bandwidth W. The solution for U >> W also covers the corresponding t-J model, which reduces to the spin model of Haldane and Shastry at half filling. We mention possible extensions of the model in one and higher dimensions.
引用
收藏
页码：244 / 247
页数：4
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