Noise-induced standing waves in oscillatory systems with time-delayed feedback

Michael Stich*, Amit K Chattopadhyay

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review


    In oscillatory reaction-diffusion systems, time-delay feedback can lead to the instability of uniform oscillations with respect to formation of standing waves. Here, we investigate how the presence of additive, Gaussian white noise can induce the appearance of standing waves. Combining analytical solutions of the model with spatio-temporal simulations, we find that noise can promote standing waves in regimes where the deterministic uniform oscillatory modes are stabilized. As the deterministic phase boundary is approached, the spatio-temporal correlations become stronger, such that even small noise can induce standing waves in this parameter regime. With larger noise strengths, standing waves could be induced at finite distances from the (deterministic) phase boundary. The overall dynamics is defined through the interplay of noisy forcing with the inherent reaction-diffusion dynamics.
    Original languageEnglish
    Article number052221
    Number of pages9
    JournalPhysical Review E
    Issue number5
    Publication statusPublished - 23 May 2016


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