Mathematics – Probability
Scientific paper
2009-07-03
Mathematics
Probability
20 pages. In french. An english version, entitled "Moderate deviations for the chemical distance in Bernoulli percolation" is
Scientific paper
In this paper, we establish moderate deviations for the chemical distance in Bernoulli percolation. The chemical distance between two points is the length of the shortest open path between these two points. Thus, we study the size of random fluctuations around the mean value, and also the asymptotic behavior of this mean value. The estimates we obtain improve our knowledge of the convergence to the asymptotic shape. Our proofs rely on concentration inequalities proved by Boucheron, Lugosi and Massart, and also on the approximation theory of subadditive functions initiated by Alexander.
Garet Olivier
Marchand Régine
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