Crossed spin-1/2 Heisenberg chains as a quantum impurity problem
Strongly Correlated Electrons
2009-11-11 v2
Abstract
Using equivalencies between different models we reduce the model of two spin-1/2 Heisenberg chains crossed at one point to the model of free fermions. The spin-spin correlation function is calculated by summing the perturbation series in the interchain coupling. The result reveals a power law decay with a nonuniversal exponent.
Keywords
Cite
@article{arxiv.cond-mat/0507312,
title = {Crossed spin-1/2 Heisenberg chains as a quantum impurity problem},
author = {S. A. Reyes and A. M. Tsvelik},
journal= {arXiv preprint arXiv:cond-mat/0507312},
year = {2009}
}
Comments
3 pages, the background information is added