Exact correlation amplitude for the S=1/2 Heisenberg antiferromagnetic chain

被引:94
作者
Affleck, I [1 ]
机构
[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
[2] Univ British Columbia, Canadian Inst Adv Res, Vancouver, BC V6T 1Z1, Canada
来源
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1998年 / 31卷 / 20期
关键词
D O I
10.1088/0305-4470/31/20/002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The exact amplitude for the asymptotic correlation function in the S = 1/2 Heisenberg antiferromagnetic chain is determined: ((S0Srb)-S-a) --> (-1)(r) delta(ab)(ln r)(1/2)/[(2 pi)(3/2)r]. The behaviour of the correlation functions for small xxz anisotropy and the form of finite-size corrections to the correlation function are also analysed.
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页码:4573 / 4581
页数:9
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