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System size stochastic resonance: general nonequilibrium potential framework.

B von Haeften1, G Izús, H S Wio

  • 1Departamento de Física, FCEyN, Universidad Nacional de Mar del Plata, Deán Funes 3350, 7600 Mar del Plata, Argentine.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 4, 2005
PubMed
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System size stochastic resonance is explained using nonequilibrium potential. Analysis reveals symmetry breaking or deepening potential minima, effectively scaling noise intensity with system size in extended systems.

Area of Science:

  • Statistical physics
  • Complex systems

Background:

  • Stochastic resonance is a phenomenon where a weak signal can be amplified by adding noise.
  • Understanding stochastic resonance in spatially extended systems is crucial for various scientific fields.

Purpose of the Study:

  • To investigate system size stochastic resonance within the nonequilibrium potential framework.
  • To provide a clear physical interpretation of this phenomenon in extended systems.

Main Methods:

  • Analysis of the nonequilibrium potential for three different cases of spatially extended systems.
  • Exploiting the properties of the nonequilibrium potential to understand the phenomenon.

Main Results:

  • The nonequilibrium potential framework offers a clear physical interpretation of system size stochastic resonance.

Related Experiment Videos

  • The phenomenon is linked to the symmetry breaking or deepening of potential minima.
  • An effective scaling of noise intensity with system size is observed.

    • Conclusions:

    • The nonequilibrium potential is a powerful tool for understanding stochastic resonance in extended systems.
    • System size effects on stochastic resonance can be explained by changes in the potential landscape.