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Deterministic coherence and anti-coherence resonances in two coupled Lorenz oscillators: Numerical study versus experiment

Author

Listed:
  • Komkov, Pavel S.
  • Moskalenko, Ol’ga I.
  • Semenov, Vladimir V.
  • Grishin, Sergei V.

Abstract

We demonstrate the deterministic coherence and anti-coherence resonance phenomena in two coupled identical chaotic Lorenz oscillators. Both effects are found to occur simultaneously when varying the coupling strength. In particular, the occurrence of deterministic coherence resonance is revealed by analysing time realizations x(t) and y(t) of both oscillators, whereas the anti-coherence resonance is identified when considering oscillations z(t) at the same parameter values. Both resonances are observed when the coupling strength does not exceed a threshold value corresponding to complete synchronization of the interacting chaotic oscillators. In such a case, the coupled oscillators exhibit the hyperchaotic dynamics associated with the on–off intermittency. The highlighted effects are studied in numerical simulations and confirmed in physical experiments, showing an excellent correspondence and disclosing thereby the robustness of the observed phenomena.

Suggested Citation

  • Komkov, Pavel S. & Moskalenko, Ol’ga I. & Semenov, Vladimir V. & Grishin, Sergei V., 2026. "Deterministic coherence and anti-coherence resonances in two coupled Lorenz oscillators: Numerical study versus experiment," Chaos, Solitons & Fractals, Elsevier, vol. 209(P2).
    • Handle: RePEc:eee:chsofr:v:209:y:2026:i:p2:s0960077926006004
    DOI: 10.1016/j.chaos.2026.118459
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