THE DIFFUSION COEFFICIENT FOR PIECEWISE EXPANDING MAPS OF THE INTERVAL WITH METASTABLE STATES

Author:

DOLGOPYAT DMITRY1,WRIGHT PAUL1

Affiliation:

1. Department of Mathematics, University of Maryland, College Park, MD 20742, USA

Abstract

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.

Publisher

World Scientific Pub Co Pte Lt

Subject

Modeling and Simulation

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