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Strong disorder for a certain class of directed polymers in a random environment

Philippe Carmona, Francesco Guerra, Yueyun Hu, Olivier Mejane

math.PRarXiv:math/0403439

Abstract

We study a model of directed polymers with an exponentially recurrent Markov chain and an indefinitely divisible random environment. We prove that the normalized partition function converges exponentially fast towards zero at all temperatures.

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