English

Truncated Connectivities in a highly supercritical anisotropic percolation model

Probability 2015-06-17 v1

Abstract

We consider an anisotropic bond percolation model on Z2\mathbb{Z}^2, with p=(ph,pv)[0,1]2\textbf{p}=(p_h,p_v)\in [0,1]^2, pv>php_v>p_h, and declare each horizontal (respectively vertical) edge of Z2\mathbb{Z}^2 to be open with probability php_h(respectively pvp_v), and otherwise closed, independently of all other edges. Let x=(x1,x2)Z2x=(x_1,x_2) \in \mathbb{Z}^2 with 0<x1<x20<x_1<x_2, and x=(x2,x1)Z2x'=(x_2,x_1)\in \mathbb{Z}^2. It is natural to ask how the two point connectivity function \prob({0x})\prob(\{0\leftrightarrow x\}) behaves, and whether anisotropy in percolation probabilities implies the strict inequality \prob({0x})>\prob({0x})\prob(\{0\leftrightarrow x\})>\prob(\{0\leftrightarrow x'\}). In this note we give an affirmative answer in the highly supercritical regime.

Keywords

Cite

@article{arxiv.1309.1120,
  title  = {Truncated Connectivities in a highly supercritical anisotropic percolation model},
  author = {Rodrigo G. Couto and Bernardo N. B. de Lima and Rémy Sanchis},
  journal= {arXiv preprint arXiv:1309.1120},
  year   = {2015}
}

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11 pages