Stochastic stability versus localization in chaotic dynamical systems

Details Stochastic stability versus localization in chaotic dynamical systems Stochastic stability versus localization in chaotic dynamical systems

1996-02-09

arxiv.org/abs/chao-dyn/9602011v1

Nonlinear Sciences

Chaotic Dynamics

27 pages, LaTeX

Scientific paper

10.1088/0951-7715/10/1/006

We prove stochastic stability of chaotic maps for a general class of Markov random perturbations (including singular ones) satisfying some kind of mixing conditions. One of the consequences of this statement is the proof of Ulam's conjecture about the approximation of the dynamics of a chaotic system by a finite state Markov chain. Conditions under which the localization phenomenon (i.e. stabilization of singular invariant measures) takes place are also considered. Our main tools are the so called bounded variation approach combined with the ergodic theorem of Ionescu-Tulcea and Marinescu, and a random walk argument that we apply to prove the absence of ``traps'' under the action of random perturbations.

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