Statistical-mechanical formulation of Lyapunov exponents
Sorin Tanase-Nicola, Jorge Kurchan

TL;DR
This paper presents a novel approach to calculating Lyapunov exponents by formulating them as a problem in statistical mechanics using quantum many-body theory, enabling new analytical techniques.
Contribution
It introduces a statistical-mechanical formulation of Lyapunov exponents, linking dynamical systems to quantum many-body problems for the first time.
Findings
Lyapunov exponents can be expressed via free energy of a quantum system.
The approach allows the use of statistical mechanics techniques in dynamical systems analysis.
Provides a new perspective for studying chaos through quantum statistical models.
Abstract
We show how the Lyapunov exponents of a dynamic system can in general be expressed in terms of the free energy of a (non-Hermitian) quantum many-body problem. This puts their study as a problem of statistical mechanics, whose intuitive concepts and techniques of approximation can hence be borrowed.
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Taxonomy
TopicsQuantum Mechanics and Non-Hermitian Physics · Statistical Mechanics and Entropy · Advanced Thermodynamics and Statistical Mechanics
