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research article

Noise-induced desynchronization and stochastic escape from equilibrium in complex networks

Tyloo, M.  
•
Delabays, R.
•
Jacquod, Ph
June 17, 2019
Physical Review E

Complex physical systems are unavoidably subjected to external environments not accounted for in the set of differential equations that models them. The resulting perturbations are standardly represented by noise terms. If these terms are large enough, they can push the system from an initial stable equilibrium point, over a nearby saddle point, outside of the basin of attraction of the stable point. Except in some specific cases, the distance between these two points is not known analytically. Focusing on Kuramoto-like models and under simple assumptions on this distance, we derive conditions under which such noise terms perturb the dynamics strongly enough that they lead to stochastic escape from the initial basin of attraction. We numerically confirm the validity of that criterion for coupled oscillators on four very different complex networks. We find in particular that, quite counterintuitively, systems with inertia leave their initial basin faster than or at the same time as systems without inertia, except for strong white-noise perturbations.

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Type
research article
DOI
10.1103/PhysRevE.99.062213
Web of Science ID

WOS:000471986600005

Author(s)
Tyloo, M.  
Delabays, R.
Jacquod, Ph
Date Issued

2019-06-17

Published in
Physical Review E
Volume

99

Issue

6

Article Number

062213

Subjects

Physics, Fluids & Plasmas

•

Physics, Mathematical

•

Physics

•

transitions

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
IPHYS  
Available on Infoscience
July 4, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/158812
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