Random pinning model with finite range correlations : disorder relevant regime

Details Random pinning model with finite range correlations : disorder relevant regime Random pinning model with finite range correlations : disorder relevant regime

2011-11-10

arxiv.org/abs/1111.2476v1

Mathematics

Probability

Scientific paper

The purpose of this paper is to show how one can extend some results on disorder relevance obtained for the random pinning model with i.i.d disorder to the model with finite range correlated disorder. In a previous work, the annealed critical curve of the latter model was computed, and equality of quenched and annealed critical points, as well as exponents, was proved under some conditions on the return exponent of the interarrival times. Here we complete this work by looking at the disorder relevant regime, where annealed and quenched critical points differ. All these results show that the Harris criterion, which was proved to be correct in the i.i.d case, remains valid in our setup. We strongly use Markov renewal constructions that were introduced in the solving of the annealed model.

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