- 96-637 Litvak Hinenzon A., Rom-Kedar V.
- Symmetry breaking perturbations and strange attractors
(3106K, Postscript)
Nov 27, 96
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Abstract. The asymmetrically forced, damped Duffing oscillator is introduced as
a prototype model for analyzing the homoclinic tangle of symmetric
dissipative systems with \textit{symmetry breaking} disturbances. Even a
slight fixed asymmetry in the perturbation may cause a substantial change in
the asymptotic behavior of the system, e.g. transitions from two sided to
one sided strange attractors as the other parameters are varied. Moreover,
slight asymmetries may cause substantial asymmetries in the relative size of
the basins of attraction of the unforced nearly symmetric attracting
regions. These changes seems to be associated with homoclinic bifurcations.
Numerical evidence indicates that \textit{strange attractors}
appear near curves corresponding to specific secondary homoclinic
bifurcations. These curves are found using analytical perturbational tools.
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