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Liouville dynamical percolation

Probability 2019-05-21 v2 Mathematical Physics math.MP

Abstract

We construct and analyze a continuum dynamical percolation process which evolves in a random environment given by a γ\gamma-Liouville measure. The homogeneous counterpart of this process describes the scaling limit of discrete dynamical percolation on the rescaled triangular lattice. Our focus here is to study the same limiting dynamics, but where the speed of microscopic updates is highly inhomogeneous in space and is driven by the γ\gamma-Liouville measure associated with a two-dimensional log-correlated field hh. Roughly speaking, this continuum percolation process evolves very rapidly where the field hh is high and barely moves where the field hh is low. Our main results can be summarized as follows. 1. First, we build this inhomogeneous dynamical percolation which we call γ\gamma-Liouville dynamical percolation (LDP) by taking the scaling limit of the associated process on the triangular lattice. We work with three different regimes each requiring different tools: γ[0,25/2)\gamma\in [0,2-\sqrt{5/2}), γ[25/2,3/2)\gamma\in [2-\sqrt{5/2}, \sqrt{3/2}), and γ(3/2,2)\gamma\in(\sqrt{3/2},2). 2. When γ<3/2\gamma<\sqrt{3/2}, we prove that γ\gamma-LDP is mixing in the Schramm-Smirnov space as tt\to \infty, quenched in the log-correlated field hh. On the contrary, when γ>3/2\gamma>\sqrt{3/2} the process is frozen in time. The ergodicity result is a crucial piece of the Cardy embedding project of the second and fourth coauthors, where LDP for γ=1/6\gamma=\sqrt{1/6} is used to study the scaling limit of a variant of dynamical percolation on uniform triangulations. 3. When γ<3/4\gamma<\sqrt{3/4}, we obtain quantitative bounds on the mixing of quad crossing events.

Keywords

Cite

@article{arxiv.1905.06940,
  title  = {Liouville dynamical percolation},
  author = {Christophe Garban and Nina Holden and Avelio Sepúlveda and Xin Sun},
  journal= {arXiv preprint arXiv:1905.06940},
  year   = {2019}
}

Comments

Minor update. 51 pages, 2 figures

R2 v1 2026-06-23T09:09:23.628Z