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Statistical determinism in non-Lipschitz dynamical systems

Published online by Cambridge University Press:  11 October 2023

THEODORE D. DRIVAS
Affiliation:
Department of Mathematics, Stony Brook University, Stony Brook, NY 11794, USA (e-mail: tdrivas@math.stonybrook.edu)
ALEXEI A. MAILYBAEV*
Affiliation:
Instituto de Matemática Pura e Aplicada, Rio de Janeiro, Brazil
ARTEM RAIBEKAS
Affiliation:
Instituto de Matemática e Estatística, Universidade Federal Fluminense, Niterói, Brazil (e-mail: artemr@id.uff.br)
*

Abstract

We study a class of ordinary differential equations with a non-Lipschitz point singularity that admits non-unique solutions through this point. As a selection criterion, we introduce stochastic regularizations depending on a parameter $\nu $: the regularized dynamics is globally defined for each $\nu> 0$, and the original singular system is recovered in the limit of vanishing $\nu $. We prove that this limit yields a unique statistical solution independent of regularization when the deterministic system possesses a chaotic attractor having a physical measure with the convergence to equilibrium property. In this case, solutions become spontaneously stochastic after passing through the singularity: they are selected randomly with an intrinsic probability distribution.

Information

Type
Original Article
Copyright
© The Author(s), 2023. Published by Cambridge University Press

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