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Paper detail

Escape process and stochastic resonance under noise-intensity fluctuation

We study the effects of noise-intensity fluctuations on the stationary and dynamical properties of an overdamped Langevin model with a bistable potential and external periodical driving force. We calculated the stationary distributions, mean-first passage time (MFPT) and the spectral amplification factor using a complete set expansion (CSE) technique. We found resonant activation (RA) and stochastic resonance (SR) phenomena in the system under investigation. Moreover, the strength of RA and SR phenomena exhibit non-monotonic behavior and their trade-off relation as a function of the squared variation coefficient of the noise-intensity process. The reliability of CSE is verified with Monte Carlo simulations.

preprint2011arXivOpen access
Yoshihiko HasegawaMasanori Arita
cond-mat.stat-mech
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Yoshihiko HasegawaMasanori Arita

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