It is shown that arbitrarily weak (frozen) heterogeneity can induce global synchronized oscillations in excitable media close to threshold. The work is carried out on networks of coupled van der Pol-FitzHugh-Nagumo oscillators. The result is shown to be robust against the presence of internal dynamical noise.
@article{arxiv.nlin/0109018,
title = {Triggering synchronized oscillations through arbitrarily weak diversity in close-to-threshold excitable media},
author = {Cristian Degli Esposti Boschi and Enrique Louis and Guillermo Ortega},
journal= {arXiv preprint arXiv:nlin/0109018},
year = {2007}
}
Comments
4 pages (RevTeX 3 style), 5 EPS figures, submitted to Phys. Rev. E (16 aug 2001)