https://doi.org/10.1140/epjb/e2011-20802-9
Regular Article
The role of soft versus hard bistable systems on stochastic resonance using average cycle energy as a quantifier
Institute of Physics, Sachivalaya Marg, 751005
Bhubaneswar, Orissa, India
a e-mail: lahiri@iopb.res.in
Received:
30
September
2011
Received in final form:
15
October
2011
Published online:
10
November
2011
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.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2011
