The European Physical Journal B

, Volume 84, Issue 2, pp 323–329 | Cite as

The role of soft versus hard bistable systems on stochastic resonance using average cycle energy as a quantifier

  • S. Rana
  • S. LahiriEmail author
  • A. M. Jayannavar
Regular Article Statistical and Nonlinear Physics


Using the input energy per cycle as a quantifier of stochastic resonance (SR), we show that SR is observed in superharmonic (hard) potentials. However, it is not observed in subharmonic (soft) potentials, even though the potential is bistable. These results are consistent with recent observations based on amplitude of average position as a quantifier. In both soft and hard potentials, we observe resonance phenomenon as a function of the driving frequency. The nature of probability distributions of average work are qualitatively different for soft and hard potentials.


Barrier Height Stochastic Resonance Average Work Escape Rate Noise Strength 
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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Institute of PhysicsSachivalaya MargBhubaneswarIndia

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