Enhancement of Stochastic Resonance in distributed systems due to a selective coupling

Details Enhancement of Stochastic Resonance in distributed systems due to a selective coupling Enhancement of Stochastic Resonance in distributed systems due to a selective coupling

1999-09-28

arxiv.org/abs/cond-mat/9909397v1

Physics

Condensed Matter

Statistical Mechanics

10 pgs (RevTex), 4 figures, submitted to Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.84.404

Recent massive numerical simulations have shown that the response of a "stochastic resonator" is enhanced as a consequence of spatial coupling. Similar results have been analytically obtained in a reaction-diffusion model, using "nonequilibrium potential" techniques. We now consider a field-dependent diffusivity and show that the "selectivity" of the coupling is more efficient for achieving stochastic-resonance enhancement than its overall value in the constant-diffusivity case.

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