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conference paper

Noise induced temporal patterns in populations of globally coupled oscillators

Hongler, Max-Olivier  
•
Filliger, Roger  
•
Blanchard, Philippe
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Kyamakya, Kyandoghere
2009
Proceedings of INDS'09, Second International Workshop on Nonlinear Dynamics and Synchronization 2009 (INDS'09)
Second International Workshop on Nonlinear Dynamics and Synchronization (INDS'09)

The population dynamics of an assembly of globally coupled homogeneous phase oscillators is studied in presence of non-Gaussian fluctuations. The variance of the underlying stochastic process grows as t + \beta^2 t^2 ( \beta being a constant) and therefore exhibits a super-diffusive behavior. The cooperative evolution of the oscillators is represented by an order parameter which, due to the ballistic \beta^2 t^2 contribution, obeys to a surprisingly complex bifurcation diagram. The specific class of super-diffusive noise sources can be represented as a random superposition of two Brownian motions with opposite drift and this allows to derive exact analytic results. We observe that besides the existence of the well known incoherent to coherent phase transition already present for Gaussian noise, entirely new and purely noise induced temporal patterns of the order parameter are realized. Hence, the ballistic contributions of the fluctuating environment does structurally modify the bifurcation diagram obtained for Gaussian noise. To illustrate potential implications of the developed class of models, we explore the dynamic behavior of a swarm formed by a planar society of particles with coupled oscillator dynamics. For this collective dynamics, we discuss how noise- induced periodic orbits of the swarm’s barycenter may emerge.

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Type
conference paper
DOI
10.1109/INDS.2009.5227997
Web of Science ID

WOS:000272591700032

Author(s)
Hongler, Max-Olivier  
•
Filliger, Roger  
•
Blanchard, Philippe
•
Rodriguez, Julio  
Editors
Kyamakya, Kyandoghere
Date Issued

2009

Publisher

Shaker Verlag

Publisher place

Aachen

Published in
Proceedings of INDS'09, Second International Workshop on Nonlinear Dynamics and Synchronization 2009 (INDS'09)
Volume

4

Start page

194

End page

197

Subjects

Bimodal Frequency-Distributions

•

Systems

•

Models

Peer reviewed

NON-REVIEWED

Written at

OTHER

EPFL units
LPM  
Event nameEvent placeEvent date
Second International Workshop on Nonlinear Dynamics and Synchronization (INDS'09)

Klagenfurt, Österreich

July 20-21, 2009

Available on Infoscience
March 18, 2009
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/36205
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