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We study dependent bond percolation on the homogeneous tree Tₙ of order n 2 under the assumption of automorphism invariance. Excluding a trivial case, we find that the number of infinite clusters a. s. is either 0 or. Furthermore, each infinite cluster a. s. has either 1, 2 or infinitely many topological ends, and infinite clusters with infinitely many topological ends have a. s. a branching number greater than 1. We also show that if the marginal probability that a single edge is open is at least 2/ (n + 1), then the existence of infinite clusters has to have positive probability. Several concrete examples are considered.
Olle Häggström (Tue,) studied this question.