Annales de l’Institut Henri Poincaré D

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Published online first: 2021-09-20
DOI: 10.4171/AIHPD/106

Constrained percolation in two dimensions

Alexander E. Holroyd[1] and Zhongyang Li[2]

(1) University of Washington, Seattle, USA
(2) University of Connecticut, Storrs, USA

We prove absence of infinite clusters and contours in a class of critical constrained percolation models on the square lattice. The percolation configuration is assumed to satisfy certain hard local constraints, but only weak symmetry and ergodicity conditions are imposed on its law. The proofs use new combinatorial techniques exploiting planar duality.

Applications include absence of infinite clusters of diagonal edges for critical dimer models on the square-octagon lattice, as well as absence of infinite contours and infinite clusters for critical XOR Ising models on the square grid. We also prove that there exists at most one infinite contour for high-temperature XOR Ising models, and no infinite contour for low-temperature XOR Ising model.

Keywords: Percolation, infinite cluster, dimer, square-hexagon lattice

Holroyd Alexander E., Li Zhongyang: Constrained percolation in two dimensions. Ann. Inst. Henri Poincaré Comb. Phys. Interact. Electronically published on September 20, 2021. doi: 10.4171/AIHPD/106 (to appear in print)