The critical Z-invariant Ising model via dimers: the periodic case

Abstract : We study a large class of critical two-dimensional Ising models namely critical Z-invariant Ising models on periodic graphs, example of which are the classical square, triangular and honeycomb lattice at the critical temperature. Fisher introduced a correspondence between the Ising model and the dimer model on a decorated graph, thus setting dimer techniques as a powerful tool for understanding the Ising model. In this paper, we give a full description of the dimer model corresponding to the critical Z-invariant Ising model. We prove that the dimer characteristic polynomial is equal (up to a constant) to the critical Laplacian characteristic polynomial, and defines a Harnack curve of genus 0. We prove an explicit expression for the free energy, and for the Gibbs measure obtained as weak limit of Boltzmann measures.
Document type :
Preprints, Working Papers, ...
35 pages, 8 figures. 2008
Liste complète des métadonnées
Contributor : Cédric Boutillier <>
Submitted on : Monday, January 19, 2009 - 2:53:53 PM
Last modification on : Tuesday, May 30, 2017 - 1:07:54 AM


  • HAL Id : hal-00354294, version 1
  • ARXIV : 0812.3848



Cédric Boutillier, Béatrice De Tilière. The critical Z-invariant Ising model via dimers: the periodic case. 35 pages, 8 figures. 2008. 〈hal-00354294〉



Consultations de la notice