LIMITING DISTRIBUTION AND ERROR TERMS FOR THE NUMBER OF VISITS TO BALLS IN NON-UNIFORMLY HYPERBOLIC DYNAMICAL SYSTEMS

摘要

We show that for systems that allow a Young tower construction with polynomially decaying correlations the return times to metric balls axe in the limit Poisson distributed. We also provide error terms which axe powers of logarithm of the radius. In order to get those uniform rates of convergence the balls centres have to avoid a set whose size is estimated to be of similar order. This result can be applied to non-uniformly hyperbolic maps and to any invariant measure that satisfies a weak regularity condition. In particular it shows that the return times to balls is Poissonian for SRB measures on attractors.