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


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.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
Uncontrolled Keywords: Condensed Matter Physics,Statistical and Nonlinear Physics,Statistics and Probability
Publication ISSN: 1550-2376
Last Modified: 04 Mar 2024 08:16
Date Deposited: 23 May 2016 09:20
Full Text Link: http://journals ... sRevE.93.052221
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016-05-23
Accepted Date: 2016-05-09
Submitted Date: 2016-02-05
Authors: Stich, Michael (ORCID Profile 0000-0001-8862-1044)
Chattopadhyay, Amit K (ORCID Profile 0000-0001-5499-6008)



Version: Accepted Version

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