The fuzzy Potts model in the plane: Scaling limits and arm exponents

Laurin Köhler-Schindler, Matthis Lehmkuehler

Published 2022-09-26Version 1

We study the fuzzy Potts model on a critical FK percolation in the plane, which is obtained by coloring the clusters of the percolation model independently at random. We show that under the assumption that this critical FK percolation model converges to a conformally invariant scaling limit (which is known to hold for the FK-Ising model), the obtained coloring converges to variants of Conformal Loop Ensembles constructed, described and studied by Miller, Sheffield and Werner. We also show, using discrete considerations that the arm exponents for this coloring in the discrete model are identical to the ones of the continuum model. Using the values of these arm exponents in the continuum, we determine the arm exponents for the fuzzy Potts model.