Multistable Pulse-like Solutions in a Parametrically Driven Ginzburg-Landau Equation

Details Multistable Pulse-like Solutions in a Parametrically Driven Ginzburg-Landau Equation Multistable Pulse-like Solutions in a Parametrically Driven Ginzburg-Landau Equation

2003-09-09

arxiv.org/abs/nlin/0309032v1

Nonlinear Sciences

Pattern Formation and Solitons

13 pages, 6 figures; to appear in PRE

Scientific paper

10.1103/PhysRevE.68.056605

It is well known that pulse-like solutions of the cubic complex Ginzburg-Landau equation are unstable but can be stabilised by the addition of quintic terms. In this paper we explore an alternative mechanism where the role of the stabilising agent is played by the parametric driver. Our analysis is based on the numerical continuation of solutions in one of the parameters of the Ginzburg-Landau equation (the diffusion coefficient $c$), starting from the nonlinear Schr\"odinger limit (for which $c=0$). The continuation generates, recursively, a sequence of coexisting stable solutions with increasing number of humps. The sequence "converges" to a long pulse which can be interpreted as a bound state of two fronts with opposite polarities.

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