Coupling strength versus coupling impact in nonidentical bidirectionally coupled dynamics

  • Authors
  • Andrzejak, Ralph Gregor ; Laiou, Petroula
  • UPF authors
  • ANDRZEJAK ., RALPH GREGOR;
  • Type
  • Scholarly articles
  • Journal títle
  • Physical Review E
  • Publication year
  • 2017
  • Volume
  • 95
  • Number
  • 1
  • Pages
  • 12210-0
  • ISSN
  • 2470-0045
  • Publication State
  • Published
  • Abstract
  • The understanding of interacting dynamics is important for the characterization of real-world networks. In general real-world networks are heterogeneous in the sense that each node of the network is a dynamics with di erent properties. For coupled non-identical dynamics symmetric interactions are not straightforwardly de ned from the coupling strength values. Thus, a challenging issue is whether we can de ne a symmetric interaction in this asymmetric setting. To address this problem we introduce the notion of the coupling impact. The coupling impact considers not only the coupling strength but also the energy of the individual dynamics which is conveyed via the coupling. To illustrate this concept, we follow a data-driven approach by analyzing signals from pairs of coupled model dynamics using two di erent connectivity measures. We nd that the coupling impact, but not the coupling strength, correctly detects a symmetric interaction between pairs of coupled dynamics regardless of their degree of asymmetry. Therefore, this approach allows to reveal the real impact that one dynamics has on the other and hence to de ne symmetric interactions in pairs of non-identical dynamics
  • Complete citation
  • Andrzejak, Ralph Gregor Laiou, Petroula. Coupling strength versus coupling impact in nonidentical bidirectionally coupled dynamics. Physical Review E 2017; 95(1).
Bibliometric indicators
  • 5 times cited Scopus
  • 4 times cited WOS
  • Índex Scimago de 0.979(2017)