Effects of bounded random perturbations on discrete dynamical systems

Christian S. Rodrigues, Alessandro P. S. de Moura, Celso Grebogi

Research output: Chapter in Book/Report/Conference proceedingChapter


In this chapter we discuss random perturbations and their effect on dynamical systems. We focus on discrete time dynamics and present different ways of implementing the random dynamics, namely the dynamics of random uncorrelated noise and the dynamics of random maps. We discuss some applications in scattering and in escaping from attracting sets. As we shall see, the perturbations may dramatically change the asymptotic behaviour of these systems. In particular, in randomly perturbed non-hyperbolic scattering trajectories may escape from regions where otherwise they are expected to be trapped forever. The dynamics also gains hyperbolic-like characteristics. These are observed in the decay of survival probability as well as in the fractal dimension of singular sets. In addition, we show that random perturbations also trigger escape from attracting sets, giving rise to transport among basins. Along the chapter, we motivate the application of such processes. We finish by suggesting some possible further applications.
Original languageEnglish
Title of host publicationBounded noises in physics, biology and engineering
EditorsAlberto d'Onofrio
Place of PublicationNew York
Number of pages17
ISBN (Print)978-1-4614-7384-8
Publication statusPublished - 2013

Publication series

NameModeling and Simulation in Science, Engineering and Technology
ISSN (Electronic)2164-3679


  • bounded noises
  • discrete-time dinamical systems
  • random perturbations
  • escape from attracting sets
  • fractal dimension


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