Exact Correlation Amplitude for the S=1/2 Heisenberg Antiferromagnetic Chain
Strongly Correlated Electrons
2009-10-31 v2
Abstract
The exact amplitude for the asymptotic correlation function in the S=1/2 Heisenberg antiferromagnetic chain is determined: <S^a_0 S^b_r> goes to (-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.
Keywords
Cite
@article{arxiv.cond-mat/9802045,
title = {Exact Correlation Amplitude for the S=1/2 Heisenberg Antiferromagnetic Chain},
author = {Ian Affleck},
journal= {arXiv preprint arXiv:cond-mat/9802045},
year = {2009}
}
Comments
8 pages, 3 figures, added reference and discussion