Microscopic chaos and macroscopic entropy in fluids

TL;DR

This paper explores the relationship between microscopic chaos, phase space contraction, and macroscopic entropy production in fluids, providing insights into nonequilibrium thermodynamics.

Contribution

It investigates the connection between phase space contraction and entropy creation, offering a new perspective on nonequilibrium thermodynamics in fluid systems.

Findings

Phase space contraction relates to entropy production.

Different viewpoints clarify the microscopic-macroscopic link.

The study advances understanding of nonequilibrium thermodynamics.

Abstract

In nonequilibrium thermodynamics macroscopic entropy creation plays an important role. Here we study, from various viewpoints, its relation with the phase space contraction, which has been recently proposed as an apparently alternative quantity. quantity.