Critical Behaviour of integrable mixed spins chains
Statistical Mechanics
2009-10-30 v1
Abstract
We construct a mixed spin 1/2 and integrable model and investigate its finite size properties. For a certain conformal invariant mixed spin system the central charge can be decomposed in terms of the conformal anomaly of two single integrable models of spin 1/2 and spin . We also compute the ground state energy and the sound velocity in the thermodynamic limit.
Keywords
Cite
@article{arxiv.cond-mat/9704063,
title = {Critical Behaviour of integrable mixed spins chains},
author = {S. R. Aladim and M. J. Martins},
journal= {arXiv preprint arXiv:cond-mat/9704063},
year = {2009}
}
Comments
This was the first correct calculation of the central charge in mixed integrable spin chains. For effects of a magnetic field see J.Phys.A:Math.Gen. 26 (1993) 7301