Abstract:Much recent rigorous study of the classical ferromagnetic Ising model has been powered by its graphical representations, such as the random current and loop O(1) model (high temperature expansion). In this paper, we prove uniqueness of Gibbs measures and exponential ratio weak mixing for the loop O(1) and random current models corresponding to the supercritical Ising model on the hypercubic lattice $\Z^d$ in any dimension $d \geq 2$. The methods generalise to $q$-flow models and have natural applications for gradient measures of $\Z/q\mathbb{Z}$-gauge theories.
From: Ulrik Thinggaard Hansen [view email]
[v1]
Mon, 30 Mar 2026 14:49:22 UTC (76 KB)
[v2]
Mon, 17 Aug 2026 14:42:36 UTC (93 KB)
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