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Bootstrap Percolation on Periodic Trees

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стр. 89--96. Society for Industrial and Applied Mathematics, Philadelphia, PA, (22.12.2014)
DOI: 10.1137/1.9781611973761.8

Аннотация

We study bootstrap percolation with the threshold parameter \$2\$ and the initial probability \$p\$ on infinite periodic trees that are defined as follows. Each node of a tree has degree selected from a finite predefined set of non-negative integers and starting from any node, all nodes at the same graph distance from it have the same degree. We show the existence of the critical threshold \$p\_f(þeta) (0,1)\$ such that with high probability, (i) if \$p > p\_f(þeta)\$ then the periodic tree becomes fully active, while (ii) if \$p < p\_f(þeta)\$ then a periodic tree does not become fully active. We also derive a system of recurrence equations for the critical threshold \$p\_f(þeta)\$ and compute these numerically for a collection of periodic trees and various values of \$þeta\$, thus extending previous results for regular (homogeneous) trees.

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