In this letter we consider the phase diffusion of a harmonically driven undamped pendulum and show that it is anomalous in the strong sense. The role played by the fractal properties of the phase space is highlighted, providing an illustration of the link between deterministic chaos and anomalous transport. Finally, we build a stochastic model which reproduces most properties of the original Hamiltonian system by alternating ballistic flights and random diffusion.

Strong anomalous diffusion of the phase of a chaotic pendulum

Mossa, Alessandro;Ruffo, Stefano
2015-01-01

Abstract

In this letter we consider the phase diffusion of a harmonically driven undamped pendulum and show that it is anomalous in the strong sense. The role played by the fractal properties of the phase space is highlighted, providing an illustration of the link between deterministic chaos and anomalous transport. Finally, we build a stochastic model which reproduces most properties of the original Hamiltonian system by alternating ballistic flights and random diffusion.
2015
111
1
1
7
10002
https://arxiv.org/abs/1504.05357
https://doi.org/10.1209/0295-5075/111/10002
Cagnetta, F.; Gonnella, G.; Mossa, Alessandro; Ruffo, Stefano
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/11696
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