SPIN-WAVE THEORY AND FINITE-SIZE SCALING FOR THE HEISENBERG-ANTIFERROMAGNET

被引：37

作者：

ZHENG, WH

HAMER, CJ

机构：

[1] School of Physics, University of New South Wales, Kensington, NSW 2033

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.47.7961

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin-wave perturbation theory for the Heisenberg antiferromagnet at zero temperature is used to compute the finite-lattice corrections to the ground-state energy, the staggered magnetization, and the energy gap. The dispersion relation, the spin-wave velocity, and the bulk ground-state energy to order O(1/S2) are also computed for the square lattice. The results agree very well with the predictions of Neuberger and Ziman and the predictions of Fisher.

引用

页码：7961 / 7970

页数：10

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