Correlations equalities and some upper bounds for the critical temperature for spin one systems
arXiv:1204.0679 · doi:10.1016/j.physa.2012.07.026
Abstract
Starting from correlation identities for the Blume-Capel spin 1 systems and using correlation inequalities, we obtain rigorous upper bounds for the critical temperature.The obtained results improve over effective field type results.
13 pages