CORRELATION-FUNCTIONS IN THE ONE-DIMENSIONAL T-J MODEL

被引:159
作者
KAWAKAMI, N
YANG, SK
机构
[1] Yukawa Institute for Theoretical Physics, Kyoto University
关键词
D O I
10.1103/PhysRevLett.65.2309
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The critical exponents for the charge, spin, electron, and superconducting correlation functions of the one-dimensional t-J model at t=J are obtained for arbitrary band filling. Our method is based on the Bethe-ansatz solution and the finite-size scaling analysis in conformal field theory. The long-distance behavior of the model belongs to the same universality class as the repulsive Hubbard model. Near half-filling the exponents take the values expected in the strong-correlation limit of the Hubbard model. In the low-density limit the exponents are those of the noninteracting system. © 1990 The American Physical Society.
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页码:2309 / 2311
页数:3
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