A logarithm law for non-autonomous systems rapidly converging to equilibrium and mean field coupled systems

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→0log⁡τr(x,y)-log⁡r=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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Publication Details

Journal
Chaos An Interdisciplinary Journal of Nonlinear Science
Published
2025-02-01
DOI
https://doi.org/10.1063/5.0221721
Primary Topic
Mathematical Dynamics and Fractals
Type
article
Field-Weighted Citation Impact
0.00

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article

A logarithm law for non-autonomous systems rapidly converging to equilibrium and mean field coupled systems

Stefano Galatolo, Davide Faranda
Chaos An Interdisciplinary Journal of Nonlinear Science
Mathematical Dynamics and Fractals
article

A logarithm law for non-autonomous systems rapidly converging to equilibrium and mean field coupled systems

Stefano Galatolo, Davide Faranda
article en

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→0log⁡τr(x,y)-log⁡r=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.

Chaos An Interdisciplinary Journal of Nonlinear ScienceVol. 35(2)
University of Pisa (IT), Centre National de la Recherche Scientifique (FR), Université de Versailles Saint-Quentin-en-Yvelines (FR), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), Laboratoire des Sciences du Climat et de l'Environnement (FR), CEA Paris-Saclay (FR)
Ministero dell’Istruzione, dell’Università e della Ricerca, Università di Pisa
Peace, Justice and strong institutions
Openalex Percentile: Top 95%
Mathematical Dynamics and Fractals
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A logarithm law for non-autonomous systems rapidly converging to equilibrium and mean field coupled systems — Stefano Galatolo, Davide Faranda · Chaos An Interdisciplinary Journal of Nonlinear Science (2025) | TGRS Research Map | TGRS