Chemical distances for percolation of planar Gaussian free fields and critical random walk loop soups

Abstract

We initiate the study on chemical distances of percolation clusters for level sets of two-dimensional discrete Gaussian free fields as well as loop clusters generated by two-dimensional random walk loop soups. One of our results states that the chemical distance between two macroscopic annuli away from the boundary for the random walk loop soup at the critical intensity is of dimension 1 with positive probability. Our proof method is based on an interesting combination of a theorem of Makarov, isomorphism theory and an entropic repulsion estimate for Gaussian free fields in the presence of a hard wall.

Version 4 improved further the exposition; accepted by CMP

References in corpus (5)

• Random Currents and Continuity of Ising Model's Spontaneous Magnetization
• Lectures on Isomorphism Theorems
• Liouville first passage percolation: the weight exponent is strictly less than 1 at high temperatures
• Strict inequality for the chemical distance exponent in two-dimensional critical percolation
• Supercritical loop percolation on ${\mathbb{Z}}^d$ for $d\ge 3$