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Transience of percolation clusters on wedges

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arxiv math/0206130 v1 pith:Z5LVISNU submitted 2002-06-12 math.PR

classification math.PR
keywords percolationclusterclustersenergyexistencefiniteflowquestion
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abstract

We study random walks on supercritical percolation clusters on wedges in $\Z^3$, and show that the infinite percolation cluster is (a.s.) transient whenever the wedge is transient. This solves a question raised by O. Haggstrom and E. Mossel. We also show that for convex gauge functions satisfying a mild regularity condition, the existence of a finite energy flow on $Z^2$ is equivalent to the (a.s.) existence of a finite energy flow on the supercritical percolation cluster. This solves a question of C. Hoffman.

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