Intermittency in chaotic systems and Renyi entropies

Abstract
The authors show that the Renyi entropies characterise the temporal intermittency in chaotic systems and are linked to a set of generalized Lyapounov exponents related to the time fluctuations of the responses to slight perturbations on the trajectory. It is also briefly indicated how a simple extension of a numerical algorithm proposed by Grassberger and Procaccia (1983) allows one to compute these entropies from a signal.