title: Double stochastic resonance over an asymmetric barrier.
abstract: In a recent experiment [Müller, Phys. Rev. A 79, 031804(R) (2009)] reported a splitting of the stochastic resonance peak, which they attributed to the asymmetry of an effective double-well restoring potential in their optomechanical read-out device. We show here that such an effect, though smaller than reported, is indeed consistent with a characterization of stochastic resonance as a synchronization phenomenon, while it proves elusive in terms of spectral quantifiers.
authors.affiliation: Dipartimento di Fisica, Università di Perugia, I-06123 Perugia, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Borromeo
authors.forename: F
authors.initials: F
authors.lastname: Marchesoni