Journal of Physics A Mathematical and General

Ising model on the union jack lattice as a free fermion model

Fa Yueh Wu, Ken‐Yu Lin

Published Nov 11, 1987• 21 citations

Abstract

It is shown that the Ising model on the union jack lattice with general anisotropic and staggered interactions is equivalent to a free fermion model, and from this equivalence explicit expressions for its free energy and a sublattice spontaneous magnetisation are obtained.

DOI: 10.1088/0305-4470/20/16/049

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