Large deviation principle for the cutsets and lower large deviation principle for the maximal flow in first passage percolation

preprint2021arXivOpen access

Abstract

We consider the standard first passage percolation model in the rescaled lattice Zd/n\mathbb Z^d/n for d≥2d\geq 2 and a bounded domain ΩΩ in Rd\mathbb R^d. We denote by Γ1Γ^1 and Γ2Γ^2 two disjoint subsets of ∂Ω\partial Ω representing respectively the sources and the sinks, \textit{i.e.}, where the water can enter in ΩΩ and escape from ΩΩ. A cutset is a set of edges that separates Γ1Γ^1 from Γ2Γ^2 in ΩΩ, it has a capacity given by the sum of the capacities of its edges. Under some assumptions on ΩΩ and the distribution of the capacities of the edges, we already know a law of large numbers for the sequence of minimal cutsets (Enmin)n≥1(\mathcal E_n^{min})_{n\geq 1}: the sequence (Enmin)n≥1(\mathcal E_n^{min})_{n\geq 1} converges almost surely to the set of solutions of a continuous deterministic problem of minimal cutset in an anisotropic network. We aim here to derive a large deviation principle for cutsets and deduce by contraction principle a lower large deviation principle for the maximal flow in ΩΩ.

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