Continuation of connecting orbits in 3D-ODEs: (I) Point-to-cycle connections

Details Continuation of connecting orbits in 3D-ODEs: (I) Point-to-cycle connections Continuation of connecting orbits in 3D-ODEs: (I) Point-to-cycle connections

2007-06-12

arxiv.org/abs/0706.1688v2

Mathematics

Dynamical Systems

18 pages, 10 figures

Scientific paper

We propose new methods for the numerical continuation of point-to-cycle connecting orbits in 3-dimensional autonomous ODE's using projection boundary conditions. In our approach, the projection boundary conditions near the cycle are formulated using an eigenfunction of the associated adjoint variational equation, avoiding costly and numerically unstable computations of the monodromy matrix. The equations for the eigenfunction are included in the defining boundary-value problem, allowing a straightforward implementation in AUTO, in which only the standard features of the software are employed. Homotopy methods to find connecting orbits are discussed in general and illustrated with several examples, including the Lorenz equations. Complete AUTO demos, which can be easily adapted to any autonomous 3-dimensional ODE system, are freely available.

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