6533b7d5fe1ef96bd12653c3
RESEARCH PRODUCT
Linear and nonlinear experimental regimes of stochastic resonance
Rosario N. MantegnaMarco TrapaneseBernardo Spagnolosubject
Statistical Mechanics (cond-mat.stat-mech)Stochastic resonanceSpectral densitySpectral density estimationFOS: Physical sciencesSignalSynchronization (alternating current)Nonlinear systemAmplitudeOrders of magnitude (time)Control theoryStatistical physicsCondensed Matter - Statistical MechanicsMathematicsdescription
We investigate the stochastic resonance phenomenon in a physical system based on a tunnel diode. The experimental control parameters are set to allow the control of the frequency and amplitude of the deterministic modulating signal over an interval of values spanning several orders of magnitude. We observe both a regime described by the linear response theory and the nonlinear deviation from it. In the nonlinear regime we detect saturation of the power spectral density of the output signal detected at the frequency of the modulating signal and a dip in the noise level of the same spectral density. When these effects are observed we detect a phase and frequency synchronization between the stochastic output and the deterministic input.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-02-25 |