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Phys. Rev. E 77, 027101 (2008) [4 pages]

Synchronization in the Kuramoto model: A dynamical gradient network approach

Maoyin Chen,1,2,3 Yun Shang,4 Yong Zou,3 and Jürgen Kurths3
1Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
2Department of Automation, Tsinghua University, Beijing 100084, China
3Institut für Physik, Potsdam Universität, Am Neuen Palais 10, D-14469, Germany
4Institute of Mathematics, AMSS, Academia Sinica, Beijing 100080, China

Received 15 October 2007; published 11 February 2008

We propose a dynamical gradient network approach to consider the synchronization in the Kuramoto model. Our scheme to adaptively adjust couplings is based on the dynamical gradient networks, where the number of links in each time interval is the same as the number of oscillators, but the links in different time intervals are also different. The gradient network in the (n+1)th time interval is decided by the oscillator dynamics in the nth time interval. According to the gradient network in the (n+1)th time interval, only one inlink's coupling for each oscillator is adjusted by a small incremental coupling. During the transition to synchronization, the intensities for all oscillators are identical. Direct numerical simulations fully verify that the synchronization in the Kuramoto model is realized effectively, even if there exist delayed couplings and external noise.

©2008 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevE.77.027101
DOI: 10.1103/PhysRevE.77.027101
PACS: 89.75.Hc; 05.45.Xt; 89.20.Hh; 05.10.-a
  • 89.75.Hc
    Networks and genealogical trees
  • 05.45.Xt
    Synchronization; coupled oscillators (nonlinear dynamical systems)
  • 89.20.Hh
    World Wide Web, Internet
  • 05.10.-a
    Computational methods in statistical physics and nonlinear dynamics
  • YEAR: 2008
KEYWORDS: complex networks, gradient methods, oscillators, synchronisation

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