Stochastic resonance in a dipole

We show that the dipole, a system usually proposed to model relaxation phenomena, exhibits a maximum in the signal-to-noise ratio at a nonzero noise level, thus indicating the appearance of stochastic resonance. The phenomenon occurs in two different situations, i.e., when the minimum of the potenti...

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Bibliographic Details
Published in:Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Statistical physics, plasmas, fluids, and related interdisciplinary topics, 1996-12, Vol.54 (6), p.6929-6932
Main Authors: Vilar, JM, Pérez-Madrid, A, Rubí, JM
Format: Article
Language:English
Subjects:
Electromagnetism
Electromagnetisme
Física estadística
Nonlinear systems
Physical chemistry and chemical physics
Química física
Sistemes no lineals
Statistical physics
Termodinàmica
Termodynamics
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Summary:We show that the dipole, a system usually proposed to model relaxation phenomena, exhibits a maximum in the signal-to-noise ratio at a nonzero noise level, thus indicating the appearance of stochastic resonance. The phenomenon occurs in two different situations, i.e., when the minimum of the potential of the dipole remains fixed in time and when it switches periodically between two equilibrium points. We have also found that the signal-to-noise ratio has a maximum for a certain value of the amplitude of the oscillating field.
ISSN:1063-651X
1095-3787
DOI:10.1103/PhysRevE.54.6929