Interface fluctuations in non equilibrium stationary states: the SOS approximation
Abstract
We study the 2d stationary fluctuations of the interface in the SOS approximation of the non equilibrium stationary state found in DOP. We prove that the interface fluctuations are of order N1/4, N the size of the system. We also prove that the scaling limit is a stationary Ornstein-Uhlenbeck process.
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