Liouville first passage percolation: geodesic length exponent is strictly larger than 1 at high temperatures

Abstract

Let $\{\eta (v):v\in V_N\}$ be a discrete Gaussian free field in a two-dimensional box $V_N$ of side length $N$ with Dirichlet boundary conditions. We study the Liouville first passage percolation, i.e., the shortest path metric where each vertex is given a weight of $e^{\gamma \eta (v)}$ for some $\gamma >0$. We show that for sufficiently small but fixed $\gamma >0$, with probability tending to $1$ as $N\to \infty$, all geodesics between vertices of macroscopic Euclidean distances simultaneously have (the conjecturally unique) length exponent strictly larger than 1.

30 pages. Title revised as suggested by referee; exposition improved following referee's comments; added 4 figures. Accepted by PTRF

References in corpus (1)

• Critical Gaussian multiplicative chaos: Convergence of the derivative martingale

Cited by in corpus (1)

• The fractal dimension of Liouville quantum gravity: universality, monotonicity, and bounds