Blume-Emery-Griffiths Model in a Random Transverse Field
Disordered Systems and Neural Networks
2007-05-23 v1
Abstract
The effect of the random quantum transverse field on the tricritical behavior of the spin-1 Blume- Emery- Griffiths (BEG) model is studied using effective field theory. It is found, that the tricritical behavior depends on both the biquadratic interaction , single- ion anisotropy , and the concentration of the disorder of . Indeed, there exist a special value of the probability below which the tricritical behavior disappears.
Cite
@article{arxiv.cond-mat/0411587,
title = {Blume-Emery-Griffiths Model in a Random Transverse Field},
author = {H. Ez-Zahraouy and H. Mahboub and A. Benyoussef and M. J. Ouazzani},
journal= {arXiv preprint arXiv:cond-mat/0411587},
year = {2007}
}