Consider a piecewise smooth expanding map of the interval possessing several invariant subintervals and the same number of ergodic absolutely continuous invariant probability measures (ACIMs). After this system is perturbed to make the subintervals lose their invariance in such a way that there is a unique ACIM, we show how to approximate the diffusion coefficient for an observable of bounded variation by the diffusion coefficient of a related continuous time Markov chain.
机构:
Inst Math Jussieu, UMR 7586, CNRS, Paris, France
UMI 2924 CNRS IMPA, BR-22460320 Rio De Janeiro, BrazilInst Math Jussieu, UMR 7586, CNRS, Paris, France
Baladi, Viviane
Smania, Daniel
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机构:
ICMC USP, Dept Mat, BR-13560970 Sao Carlos, SP, BrazilInst Math Jussieu, UMR 7586, CNRS, Paris, France