English

Finite-energy infinite clusters without anchored expansion

Probability 2021-01-26 v2 Mathematical Physics math.MP

Abstract

Hermon and Hutchcroft have recently proved the long-standing conjecture that in Bernoulli(p) bond percolation on any nonamenable transitive graph G, at any p > p_c(G), the probability that the cluster of the origin is finite but has a large volume n decays exponentially in n. A corollary is that all infinite clusters have anchored expansion almost surely. They have asked if these results could hold more generally, for any finite energy ergodic invariant percolation. We give a counterexample, an invariant percolation on the 4-regular tree.

Keywords

Cite

@article{arxiv.2011.01377,
  title  = {Finite-energy infinite clusters without anchored expansion},
  author = {Gábor Pete and Ádám Timár},
  journal= {arXiv preprint arXiv:2011.01377},
  year   = {2021}
}

Comments

9 pages, 1 figure. Small changes throughout. To appear in Bernoulli

R2 v1 2026-06-23T19:52:08.322Z