Can I read Driven Brownian particle as a paradigm for a nonequilibrium heat bath: Effective temperature and cyclic work extraction on EtoBox?

Driven Brownian particle as a paradigm for a nonequilibrium heat bath: Effective temperature and cyclic work extraction by Wulfert, Robert; Oechsle, Michael; Speck, Thomas; Seifert, Udo is a scholarly article available to read on EtoBox.

What is Driven Brownian particle as a paradigm for a nonequilibrium heat bath: Effective temperature and cyclic work extraction about?

We apply the concept of a frequency-dependent effective temperature based on the fluctuation-dissipation ratio to a driven Brownian particle in a nonequilibrium steady state. Using this system as a thermostat for a weakly coupled harmonic oscillator, the oscillator thermalizes according to a canonical distribution at the respective effective temperature across the entire frequency spectrum. By turning the oscillator from a passive "thermometer" into a heat engine, we realize the cyclic extraction of work from a single thermal reservoir, which is feasible only due to its nonequilibrium nature.

Author

Wulfert, Robert; Oechsle, Michael; Speck, Thomas; Seifert, Udo

Published

2017

Language

EN