On the viability of local criteria for chaos
arXiv:gr-qc/0407020 · doi:10.1016/j.aop.2004.08.008
Abstract
We consider here a recently proposed geometrical criterion for local instability based on the geodesic deviation equation. Although such a criterion can be useful in some cases, we show here that, in general, it is neither necessary nor sufficient for the occurrence of chaos. To this purpose, we introduce a class of chaotic two-dimensional systems with Gaussian curvature everywhere positive and, hence, locally stable. We show explicitly that chaotic behavior arises from some trajectories that reach certain non convex parts of the boundary of the effective Riemannian manifold. Our result questions, once more, the viability of local, curvature-based criteria to predict chaotic behavior.
arXiv comment10 pages
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- Geodesic Motion on Closed Spaces: Two Numerical Examples