title: Effective stochastic resonance under noise of heterogeneous amplitude.
abstract: Stochastic resonance is numerically and analytically studied using a model wherein two coupled particles are exposed to noise of heterogeneous (i.e., particle-dependent) amplitude. In a certain range of coupling constant and under noise of heterogeneous amplitude, a particle is observed to resonate intensively to the external field. In other words, one particle under noise of very small or zero amplitude exhibits intensive resonance with the assistance of a highly fluctuating second particle under noise of large amplitude. This intensive resonance is interpreted as a product of the unique combinatory dynamics between one particle that stochastically fluctuates and another particle that classically resonates to the external field.
authors.affiliation: Department of Mathematical and Life Sciences, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Kawai
authors.forename: Shogo
authors.initials: S
authors.lastname: Torigoe
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Yoshida
authors.forename: Akinori
authors.initials: A
authors.lastname: Awazu
authors.forename: Hiraku
authors.initials: H
authors.lastname: Nishimori