On the domination of random walk on a discrete cylinder by random interlacements

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Author
Date
2009Type
- Journal Article
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Cited 16 times in
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Cited 15 times in
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Abstract
We consider simple random walk on a discrete cylinder with base a large d-dimensional torus of side-length N, when d is two or more. We develop a stochastic domination control on the local picture left by the random walk in boxes of side-length almost of order N, at certain random times comparable to the square of the number of sites in the base. We show a domination control in terms of the trace left in similar boxes by random interlacements in the infinite (d+1)-dimensional cubic lattice at a suitably adjusted level. As an application we derive a lower bound on the disconnection time of the discrete cylinder, which as a by-product shows the tightness of the laws of the ratio of the square of the number of sites in the base to the disconnection time. This fact had previously only been established when d is at least 17. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000015463Publication status
publishedExternal links
Journal / series
Electronic Journal of ProbabilityVolume
Pages / Article No.
Publisher
Institute of Mathematical StatisticsSubject
disconnection; random walks; random interlacements; discrete cylindersOrganisational unit
03320 - Sznitman, Alain-Sol (emeritus) / Sznitman, Alain-Sol (emeritus)
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Citations
Cited 16 times in
Web of Science
Cited 15 times in
Scopus
ETH Bibliography
yes
Altmetrics