Phases of random antiferromagnetic spin-1 chains
Strongly Correlated Electrons
2009-10-30 v1
Abstract
We formulate a real-space renormalization scheme that allows the study of the effects of bond randomness in the Heisenberg antiferromagnetic spin-1 chain. There are four types of bonds that appear during the renormalization flow. We implement numerically the decimation procedure. We give a detailed study of the probability distributions of all these bonds in the phases that occur when the strength of the disorder is varied. Approximate flow equations are obtained in the weak-disorder regime as well as in the strong disorder case where the physics is that of the random singlet phase.
Keywords
Cite
@article{arxiv.cond-mat/9712172,
title = {Phases of random antiferromagnetic spin-1 chains},
author = {C. Monthus and O. Golinelli and Th. Jolicoeur},
journal= {arXiv preprint arXiv:cond-mat/9712172},
year = {2009}
}
Comments
29 pages, 12 encapsulated Postscript figures, REVTeX 3.0