Thermodynamics of a stochastic twin elevator

Details Thermodynamics of a stochastic twin elevator Thermodynamics of a stochastic twin elevator

2011-09-02

arxiv.org/abs/1109.1257v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We study the non-equilibrium thermodynamics of a single particle with two available energy levels, in contact with a classical (Maxwell-Boltzmann) or quantum (Bose-Einstein) heat bath. The particle can undergo transitions between the levels via thermal activation or deactivation. The energy levels are alternately raised at a given rate regardless of occupation by the particle, maintaining a fixed energy gap equal to epsilon between them. We explicitly calculate the work, heat and entropy production rates. The efficiency in both the classical and the quantum case goes to a limit between 100% and 50% that depends on the relative rates of particle transitions and level elevation. In the classical problem we explicitly find the large deviation functions for heat, work, and internal energy.

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