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Bounds for the free energy of directed polymers in random environment in dimension 1+1
Frederique Watbled1

We give sharp estimates for the free energy of directed polymers in random environment in dimension 1+1. These estimates were known for a gaussian environment, we extend them to the case where the law of the environment is infinitely divisible.
1:  LMBA - UMR 6205 Université Bretagne Sud
UMR 6205 Universite Bretagne Sud
directed polymers in random environment – free energy – infinite divisibility – FKG inequality