Stochastic thermodynamics for Ising chain and symmetric exclusion process

Abstract

We verify the finite-time fluctuation theorem for a linear Ising chain in contact with heat reservoirs at its ends.Analytic results are derived for a chain consisting of two spins. The system can be mapped onto a model forparticle transport, namely, the symmetric exclusion process in contact with thermal and particle reservoirs. Wemodify the symmetric exclusion process to represent a thermal engine and reproduce universal features of theefficiency at maximum power.