Correlation inequalities for some classical spin vector models

doi:10.1016/0375-9601(75)90799-9

Physics Letters A

Volume 54, Issue 6, 20 October 1975, Pages 428-430

https://doi.org/10.1016/0375-9601(75)90799-9 Get rights and content

Abstract

Correlation inequalities are derived for a class of lattice systems including some classical anisotropic X-Y and Heisenberg ferromagnets. In particular, a comparison is estab- lished between some correlation functions of the X-Yand Heisenberg models.

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