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Correlation identities and rigorous upper bounds on the critical temperature for the spin-1 Blume–Capel model on a Kagome lattice

Author

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  • Santos, Jander P.
  • Sá Barreto, F.C.

Abstract

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 results for the magnetization, the critical frontiers and the tricritical points are obtained. The rigorous upper bounds on the critical temperature improve over those effective-type theories results.

Suggested Citation

  • Santos, Jander P. & Sá Barreto, F.C., 2015. "Correlation identities and rigorous upper bounds on the critical temperature for the spin-1 Blume–Capel model on a Kagome lattice," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 421(C), pages 548-561.
    • Handle: RePEc:eee:phsmap:v:421:y:2015:i:c:p:548-561
    DOI: 10.1016/j.physa.2014.11.063
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    Cited by:

    1. Schmidt, M. & Dias, P.F., 2021. "Correlated cluster mean-field theory for Ising-like spin systems," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 573(C).

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