Santos, Jander P.; Sá Barreto, F.C. - In: Physica A: Statistical Mechanics and its Applications 421 (2015) C, pp. 548-561
Spin correlation identities for the Blume–Capel model on Kagome lattice are derived and combined with rigorous correlation inequalities lead to upper bounds on the critical temperature. From the spin correlation identities the mean field approximation and the effective field approximation...