Critical properties of the double-frequency sine-Gordon model with applications
Strongly Correlated Electrons
2009-10-31 v1 High Energy Physics - Theory
Abstract
We study the properties of the double-frequency sine--Gordon model in the vicinity of the Ising quantum phase transition displayed by this model. Using a mapping onto a generalised lattice quantum Ashkin-Teller model, we obtain critical and nearly-off-critical correlation functions of various operators. We discuss applications of the double-sine-Gordon model to one-dimensional physical systems, like spin chains in a staggered external field and interacting electrons in a staggered potential.
Keywords
Cite
@article{arxiv.cond-mat/0001227,
title = {Critical properties of the double-frequency sine-Gordon model with applications},
author = {M. Fabrizio and A. O. Gogolin and A. A. Nersesyan},
journal= {arXiv preprint arXiv:cond-mat/0001227},
year = {2009}
}
Comments
51 pages, Latex file