THE EXACT CORRELATION LENGTH OF THE ANTIFERROMAGNETIC D=2+1 HEISENBERG-MODEL AT LOW-TEMPERATURES

被引：202

作者：

HASENFRATZ, P ^{[1
]}

NIEDERMAYER, F ^{[1
]}

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,W-8000 MUNICH 40,GERMANY

来源：

PHYSICS LETTERS B | 1991年 / 268卷 / 02期

关键词：

D O I：

10.1016/0370-2693(91)90809-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The temperature dependence of the correlation length is predicted to be xi(T) = 1/8 e(HBAR(c)/2-pi-F2) exp (2-pi-F2/T)[1-0.5T/2-pi-F2 + O((T/2-pi-F2)2)]. The spin wave velocity c and the parameter F control the low energy behavior of the model as illustrated further on the temperature and volume dependence of the internal energy calculated here up to next-to-leading order.

引用

页码：231 / 235

页数：5

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