First passage percolation and escape strategies

preprint2013arXivOpen access

Abstract

Consider first passage percolation on Zd\mathbb{Z}^d with passage times given by i.i.d. random variables with common distribution FF. Let tπ(u,v)t_π(u,v) be the time from uu to vv for a path ππ and t(u,v)t(u,v) the minimal time among all paths from uu to vv. We ask whether or not there exist points x,y∈Zdx,y \in \mathbb{Z}^d and a semi-infinite path π=(y0=y,y1,… )π=(y_0=y,y_1,\dots) such that tπ(y,yn+1)<t(x,yn)t_π(y, y_{n+1})<t(x,y_n) for all nn. Necessary and sufficient conditions on FF are given for this to occur. When the support of FF is unbounded, we also obtain results on the number of edges with large passage time used by geodesics.

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