A differential algorithm for the Lyapunov spectrum |
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Authors: | Tomasz Stachowiak |
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Institution: | a Copernicus Center for Interdisciplinary Studies, ul. Gronostajowa 3, 30-387 Kraków, Polandb Marc Kac Complex Systems Research Centre, Jagiellonian University, Reymonta 4, 30-059 Kraków, Polandc Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland |
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Abstract: | We present a new algorithm for computing the Lyapunov exponents spectrum based on a matrix differential equation. The approach belongs to the so-called continuous type, where the rate of expansion of perturbations is obtained for all times, and the exponents are reached as the limit at infinity. It does not involve exponentially divergent quantities so there is no need of rescaling or realigning of the solution. We show the algorithm’s advantages and drawbacks using mainly the example of a particle moving between two contracting walls. |
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Keywords: | Lyapunov exponents Numerical algorithm Highly oscillatory systems |
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