Coordinate representation of the two-spinon wave function and spinon interaction in the Haldane-Shastry model

被引：23

作者：

Bernevig, BA ^{[1
]}

Giuliano, D

Laughlin, RB

机构：

[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[2] Ist Nazl Fis Mat, Unita Napoli, Naples, Italy

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.64.024425

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By deriving and studying the coordinate representation for the two-spinon wave function, we show that spinon excitations in the Haldane-Shastry model interact. The interaction is given by a short-range attraction and causes an enhancement in the two-spinon wave function at short separations between the spinons. We express the spin susceptibility for a finite lattice in terms of the enhancement, given by the two-spinon wave function at zero separation. In the thermodynamic limit, the spinon attraction turns into the square-root divergence in the dynamical spin susceptibility.

引用

页数：18

共 24 条

[11] EXACT JASTROW-GUTZWILLER RESONATING-VALENCE-BOND GROUND-STATE OF THE SPIN 1/2 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH 1/R2 EXCHANGE [J].