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arXiv · 1506.04277

Characterizing Weak Chaos using Time Series of Lyapunov Exponents

R. M. da Silva·C. Manchein·M. W. Beims·E. G. Altmann
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Abstract

We investigate chaos in mixed-phase-space Hamiltonian systems using time series of the finite- time Lyapunov exponents. The methodology we propose uses the number of Lyapunov exponents close to zero to define regimes of ordered (stickiness), semi-ordered (or semi-chaotic), and strongly chaotic motion. The dynamics is then investigated looking at the consecutive time spent in each regime, the transition between different regimes, and the regions in the phase-space associated to them. Applying our methodology to a chain of coupled standard maps we obtain: (i) that it allows for an improved numerical characterization of stickiness in high-dimensional Hamiltonian systems, when compared to the previous analyses based on the distribution of recurrence times; (ii) that the transition probabilities between different regimes are determined by the phase-space volume associated to the corresponding regions; (iii) the dependence of the Lyapunov exponents with the coupling strength.

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R. M. da Silva, C. Manchein, M. W. Beims, E. G. Altmann. 2015-06-13. Characterizing Weak Chaos using Time Series of Lyapunov Exponents. https://doi.org/10.1103/physreve.91.062907

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