1/N EXPANSION FOR THE SCHWINGER-BOSON THEORY OF QUANTUM ANTIFERROMAGNETS

被引：17
|
作者：
STARYKH, OA
机构：
[1] Texas Center for Superconductivity, University of Houston, Houston
来源：
PHYSICAL REVIEW B | 1994年 / 50卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.50.16428
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate static properties of the two-dimensional quantum Heisenberg antiferromagnet in the framework of the 1/N expansion of the CPN-1 model. The calculations are done in the renormalized-classical region. The logarithmic corrections to the spin-correlation length are found to change the temperature dependence of its prefactor. The renormalized staggered susceptibility is completely determined by the renormalization of the spin-correlation length. The results we obtain are in agreement with the renormalization-group and 1/N studies of the O(N) nonlinear σ model. © 1994 The American Physical Society.
引用
收藏
页码：16428 / 16437
页数：10
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