University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Robust heteroclinic cycles in the one-dimensional complex Ginzburg-Landau equation

Lloyd, David, Champneys, AR and Wilson, RE (2005) Robust heteroclinic cycles in the one-dimensional complex Ginzburg-Landau equation PHYSICA D-NONLINEAR PHENOMENA, 204, 3-4. {240-268}.

[img] Text (licence)
Restricted to Repository staff only

Download (33kB)


Numerical evidence is presented for the existence of stable heteroclinic cycles in large parameter regions of the one-dimensional complex Ginzburg-Landau equation (CGL) on the unit, spatially periodic domain. These cycles connect different spatially and temporally inhomogeneous time-periodic solutions as t -> infinity. A careful analysis of the connections is made using a projection onto five complex Fourier modes. It is shown first that the time-periodic solutions can be treated as (relative) equilibria after consideration of the symmetries of the CGL. Second, the cycles are shown to be robust since the individual heteroclinic connections exist in invariant subspaces. Thirdly, after constructing appropriate Poincare maps around the cycle, a criteria for temporal stability is established, which is shown numerically to hold in specific parameter regions where the cycles are found to be of Shil’nikov type. This criterion is also applied to a much higher-mode Fourier truncation where similar results are found. In regions where instability of the cycles occurs, either Shil’nikov-Hopf or blow-out bifurcations are observed, with numerical evidence of competing attractors. Implications for observed spatio-temporal intermittency in situations modelled by the CGL are discussed. (c) 2005 Elsevier B.V. All rights reserved.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Champneys, AR
Wilson, RE
Date : 2005
DOI : 10.1016/j.physd.2005.04.019
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:52
Last Modified : 24 Jan 2020 12:09

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800