Percolation for the Vacant Set of Random Interlacements

Details Percolation for the Vacant Set of Random Interlacements Percolation for the Vacant Set of Random Interlacements

2008-08-25

arxiv.org/abs/0808.3344v1

Comm. Pure Appl. Math., 62(6), 831-858, 2009.

Mathematics

Probability

24 pages, 3 figures, accepted for publication in Communications on Pure and Applied Mathematics

Scientific paper

We investigate random interlacements on Z^d, d bigger or equal to 3. This model recently introduced in arXiv:0704.2560 corresponds to a Poisson cloud on the space of doubly infinite trajectories modulo time-shift tending to infinity at positive and negative infinite times. A non-negative parameter u measures how many trajectories enter the picture. Our main interest lies in the percolative properties of the vacant set left by random interlacements at level u. We show that for all d bigger or equal to 3 the vacant set at level u percolates when u is small. This solves an open problem of arXiv:0704.2560, where this fact has only been established when d is bigger or equal to 7. It also completes the proof of the non-degeneracy in all dimensions d bigger or equal to 3 of the critical parameter introduced in arXiv:0704.2560.

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