2019/12/06 by Hilario, Marcelo R., Sá, Marcos, Sanchis, Remy +1 · 1 citation
#FOS: Mathematics #Probability (math.PR)
paper · doi:10.48550/arxiv.1912.03320
Let \ξi\i ≥ 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 i-th vertical column to another in the (i+1)-th vertical column by an edge having length ξi. Then declare independently each edge e in the resulting lattice open with probability pe=p|e| where p∈[0,1] and |e| is the length of e. We relate the occurrence of nontrivial phase transition for this model to moment properties of ξ1. More precisely, we prove that the model undergoes a nontrivial phase transition when 𝔼(ξ1η)1 whereas, when 𝔼(ξ1η)=∞ for some η<1, no phase transition occurs.