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A logarithm law for non-autonomous systems rapidly converging to equilibrium and mean field coupled systems
Stefano Galatolo1, Davide Faranda2
1Dipartimento di Matematica, Centro Interdipartimentale per lo Studio dei Sistemi Complessi, Universitá di Pisa, 56127 Pisa, Italy.
Abstract:
We prove that if a non-autonomous system has in a certain sense a fast convergence to equilibrium (faster than any power law behavior), then the time τr(x,y) needed for a typical point x to enter for the first time in a ball B(y,r) centered at y, with small radius r, scales as the local dimension of the equilibrium measure μ at y, i.e., limr→0logτr(x,y)-logr=dμ(y). We then apply the general result to concrete systems of different kinds, showing such a logarithm law for asymptotically autonomous solenoidal maps and mean field coupled expanding maps.
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