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RESEARCH PRODUCT
Experimental investigation of resonant activation
Rosario N. MantegnaBernardo Spagnolosubject
PhysicsHalf-normal distributionStatistical Mechanics (cond-mat.stat-mech)Physical systemFOS: Physical sciencesGeneral Physics and AstronomyProbability density functionSymmetric probability distributionNoise (electronics)Exponential functionProbability distributionStatistical physicsReciprocal distributionCondensed Matter - Statistical Mechanicsdescription
We experimentally investigate the escape from a metastable state over a fluctuating barrier of a physical system. The system is switching between two states under electronic control of a dichotomous noise. We measure the escape time and its probability density function as a function of the correlation rate of the dichotomous noise in a frequency interval spanning more than 4 frequency decades. We observe resonant activation, namely a minimum of the average escape time as a function of the correlation rate. We detect two regimes in the study of the shape of the escape time probability distribution: (i) a regime of exponential and (ii) a regime of non-exponential probability distribution.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-02-15 | Physical review letters |