Emerging attractors and the transition from dissipative to conservative dynamics

Details Emerging attractors and the transition from dissipative to conservative dynamics Emerging attractors and the transition from dissipative to conservative dynamics

2008-08-28

arxiv.org/abs/0808.3954v2

Physical Review E 80, 026205 (2009)

Nonlinear Sciences

Chaotic Dynamics

9 pages, 10 figures. Accepted and in press for PRE

Scientific paper

10.1103/PhysRevE.80.026205

The topological structure of basin boundaries plays a fundamental role in the sensitivity to the initial conditions in chaotic dynamical systems. Herewith we present a study on the dynamics of dissipative systems close to the Hamiltonian limit, emphasising the increasing number of periodic attractors and on the structural changes in their basin boundaries as the dissipation approaches zero. We show numerically that a power law with nontrivial exponent describes the growth of the total number of periodic attractors as the damping is decreased. We also establish that for small scales the dynamics is governed by \emph{effective} dynamical invariants, whose measure depends not only on the region of the phase space, but also on the scale under consideration. Therefore, our results show that the concept of effective invariants is also relevant for dissipative systems.

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