English

Phase transition for percolation on a randomly stretched lattice

Probability 2020-10-21 v2

Abstract

Let {ξi}i1\{\xi_i\}_{i \geq 1} be a sequence of i.i.d.\ positive random variables. Starting from the usual square lattice replace each horizontal edge that links a site in ii-th vertical column to another in the (i+1)(i+1)-th vertical column by an edge having length ξi\xi_i. Then declare independently each edge ee in the resulting lattice open with probability pe=pep_e=p^{|e|} where p[0,1]p\in[0,1] and e|e| is the length of ee. We relate the occurrence of nontrivial phase transition for this model to moment properties of ξ1\xi_1. More precisely, we prove that the model undergoes a nontrivial phase transition when E(ξ1η)<\mathbb{E}(\xi_1^\eta)<\infty, for some η>1\eta>1 whereas, when E(ξ1η)=\mathbb{E}(\xi_1^\eta)=\infty for some η<1\eta<1, no phase transition occurs.

Keywords

Cite

@article{arxiv.1912.03320,
  title  = {Phase transition for percolation on a randomly stretched lattice},
  author = {Marcelo R. Hilario and Marcos Sá and Remy Sanchis and Augusto Teixeira},
  journal= {arXiv preprint arXiv:1912.03320},
  year   = {2020}
}
R2 v1 2026-06-23T12:38:30.196Z