Breakdown of the Jarzynski relation for an adiabatic stretching of an isotropic spring

TL;DR

This paper tests the Jarzynski relation in an exactly solvable model of adiabatic stretching of an isotropic spring and finds it does not hold, challenging recent supporting arguments.

Contribution

It provides a theoretical counterexample showing the Jarzynski relation fails in an adiabatic process, contradicting prior claims of its universal validity.

Findings

Jarzynski relation does not hold in the studied model

Adiabatic stretching can violate the relation

Contradicts recent supporting arguments

Abstract

We perform a theoretical test of Jarzynski relation for an adiabatic stretching of an isotropic spring, which is an exactly solvable model. It turns out that Jarzynski relation does not hold even when the entire infinite momentum space of the system state is taken into account, in contradiction to recent arguments supporting Jarzynski relation.