Experimental investigation of chimera states with quiescent and synchronous domains in coupled electronic oscillators

Lucia Valentina Gambuzza, Arturo Buscarino, Sergio Chessari, Luigi Fortuna, Riccardo Meucci, and Mattia Frasca
Phys. Rev. E 90, 032905 – Published 8 September 2014
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Abstract

Chimera states, that is, dynamical regimes characterized by the existence of a symmetry-broken solution where a coherent domain and an incoherent one coexist, have been theoretically demonstrated and numerically found in networks of homogeneously coupled identical oscillators. In this work we experimentally investigate the behavior of a closed and an open chain of electronic circuits with neuron-like spiking dynamics and first neighbor connections. Experimental results show the onset of a regime that we call chimera states with quiescent and synchronous domains, where synchronization coexists with spatially patterned oscillation death. The whole experimental bifurcation scenario, showing how disordered states, synchronization, chimera states with quiescent and synchronous domains, and oscillatory death states emerge as coupling is varied, is presented.

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  • Received 13 December 2013
  • Revised 25 June 2014

DOI:https://doi.org/10.1103/PhysRevE.90.032905

©2014 American Physical Society

Authors & Affiliations

Lucia Valentina Gambuzza1, Arturo Buscarino1, Sergio Chessari1, Luigi Fortuna1, Riccardo Meucci2, and Mattia Frasca1,*

  • 1DIEEI, Universita degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
  • 2CNR-Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Florence, Italy

  • *mfrasca@diees.unict.it

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Vol. 90, Iss. 3 — September 2014

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