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math.PR2025
Coincidence of critical points for directed polymers for general environments and random walks
Stefan Junk, Hubert Lacoin
For the directed polymer in a random environment (DPRE), two critical inverse-temperatures can be defined. The first one, , separates the strong disorder regime (in which the…
math.PR2024
Equivalence of fluctuations of discretized SHE and KPZ equations in the subcritical weak disorder regime
Stefan Junk, Shuta Nakajima
We study the fluctuations of discretized versions of the stochastic heat equation (SHE) and the Kardar-Parisi-Zhang (KPZ) equation in spatial dimensions in the weak disor…