Stochastic resonance without external periodic force

Hu Gang, T. Ditzinger, C. Z. Ning, H. Haken

Research output: Contribution to journalArticlepeer-review

769 Scopus citations


A model of a two-dimensional autonomous system subject to external noise is investigated. Without noise the system has a stable limit cycle in a certain region of control parameter. Various noise-induced effects have been found numerically, such as a noise-induced frequency shift in the presence of the deterministic limit cycle, and noise-induced coherent oscillations in the absence of the deterministic limit cycle. An interesting result is that the stochastic resonance phenomenon appears in a system without an external signal and when the asymptotic state of the deterministic system is stationary.

Original languageEnglish (US)
Pages (from-to)807-810
Number of pages4
JournalPhysical Review Letters
Issue number6
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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