Influence of the coupling mechanism on the stochastic resonance response in extended systems

We analyze the stochastic resonance response in an extended system, considering different transport/coupling mechanisms: diffusion, KPZ, and also include the possibility of a non-local interaction. Our aim, since these mechanisms correspond to different forms of coupling of resonant units leading to an extended system, is to obtain information about the way to optimize the system's response to weak signals. To reach such a goal, we exploit the knowledge of the so called "non-equilibrium potential" for the above indicated situations.