Geodesics cross any pattern in first-passage percolation without any moment assumption and with possibly infinite passage times
Résumé
In first-passage percolation, one places nonnegative i.i.d. random variables (T(e)) on the edges
of Z^d. A geodesic is an optimal path for the passage times T(e). Consider a local property of the
time environment. We call it a pattern. We investigate the number of times a geodesic crosses
a translate of this pattern. When we assume that the common distribution of the passage times
satisfies a suitable moment assumption, it is shown in [Antonin Jacquet. Geodesics in first-passage
percolation cross any pattern, arXiv:2204.02021, 2023] that, apart from an event with exponentially
small probability, this number is linear in the distance between the extremities of the geodesic. This
paper completes this study by showing that this result remains true when we consider distributions
with an unbounded support without any moment assumption or distributions with possibly infinite
passage times. The techniques of proof differ from the preceding article and rely on a notion of
penalized geodesic.
Domaines
Probabilités [math.PR]
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Geodesics cross any pattern in first-passage percolation without any moment assumption and with possibly infinite passage times - HAL v1.pdf (429.06 Ko)
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