Chaotic synchronizations of spatially extended systems as non-equilibrium phase transitions (Articolo in rivista)

Type
Label
  • Chaotic synchronizations of spatially extended systems as non-equilibrium phase transitions (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2945903 (literal)
Alternative label
  • Cencini M.; Tessone C.J.; Torcini A. (2008)
    Chaotic synchronizations of spatially extended systems as non-equilibrium phase transitions
    in Chaos (Woodbury N.Y.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cencini M.; Tessone C.J.; Torcini A. (literal)
Pagina inizio
  • 037125 (literal)
Pagina fine
  • [11] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18(3) (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Focus issue: Synchronization in complex networks. American Institute of Physics (AIP). (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) INFM-CNR, SMC Dipartimento di Fisica, Università Roma 1, P.zzle A. Moro 2, 00185 Roma, Italy and Istituto dei Sistemi Complessi-CNR, via dei Taurini 19, 00185 Roma, Italy 2) Chair of Systems Design, ETH Zürich, Kreuzplatz 5, 8037 Zürich, Switzerland 3) INFN-Sezione di Firenze and CSDC, via Sansone 1, 50019 Sesto Fiorentino, Italy, Centre de Physique Théorique, Campus de Luminy, 13288 Marseille, France, and Istituto dei Sistemi Complessi-CNR, via Madonna del Piano 10, 50019 Sestio Fiorentino, Italy (literal)
Titolo
  • Chaotic synchronizations of spatially extended systems as non-equilibrium phase transitions (literal)
Abstract
  • Two replicas of spatially extended chaotic systems synchronize to a common spatio-temporal chaotic state when coupled above a critical strength. As a prototype of each single spatio-temporal chaotic system a lattice of maps interacting via power-law coupling is considered. The synchronization transition is studied as a non-equilibrium phase transition, and its critical properties are analyzed at varying the spatial interaction range as well as the nonlinearity of the dynamical units composing each system. In particular, continuous and discontinuous local maps are considered. In both cases the transitions are of the second order with critical indexes varying with the exponent characterizing the interaction range. For discontinuous maps it is numerically shown that the transition belongs to the {\it anomalous directed percolation} (ADP) family of universality classes, previously identified for L{\'e}vy-flight spreading of epidemic processes. For continuous maps, the critical exponents are different from those characterizing ADP, but apart from the nearest-neighbor case, the identification of the corresponding universality classes remains an open problem. Finally, to test the influence of deterministic correlations for the studied synchronization transitions, the chaotic dynamical evolutions are substituted by suitable stochastic models. In this framework and for the discontinuous case, it is possible to derive an effective Langevin description that corresponds to that proposed for ADP. (literal)
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