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Related Experiment Video

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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Stochastic resonance in periodic potentials.

S Saikia¹, A M Jayannavar, Mangal C Mahato

¹Department of Physics, North-Eastern Hill University, Shillong, India.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|July 30, 2011

Summary

This summary is machine-generated.

Stochastic resonance (SR) occurs in periodic potential systems, contrary to previous assumptions. This study demonstrates SR in high-frequency regimes, driven by distinct dynamical states within the system.

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Area of Science:

Nonlinear dynamics
Statistical physics
Complex systems

Background:

Stochastic resonance (SR) is typically observed in bistable systems.
The occurrence of SR in periodic potential systems remains an open question.
Understanding SR in different potential landscapes is crucial for its applications.

Purpose of the Study:

To investigate the phenomenon of stochastic resonance (SR) in periodically driven periodic potential systems.
To determine if SR can occur in systems that are not bistable.
To explore the role of system dynamics in the manifestation of SR.

Main Methods:

Numerical simulations of a moderately feebly damped, periodically driven, noisy periodic potential system.
Analysis of system dynamics and trajectory states.
Examination of frequency-dependent mobility as a function of noise strength.

Main Results:

Stochastic resonance (SR) is demonstrated to occur in periodic potential systems.
SR is observed in the high-frequency regime.
The linear-response theory accurately predicts maximum frequency-dependent mobility concerning noise strength.
The presence of two distinct dynamical states is critical for SR occurrence.

Conclusions:

Periodic potential systems can exhibit stochastic resonance (SR), expanding the known conditions for this phenomenon.
The high-frequency regime and specific dynamical states are key factors for SR in these systems.
This finding has implications for understanding noise-induced phenomena in various physical systems.