Efficiency of a cyclic quantum heat engine with finite-size baths
Quantum Physics
2019-09-02 v2 Statistical Mechanics
Abstract
In this paper we investigate the relationship between the efficiency of a cyclic quantum heat engine with the Hilbert space dimension of the thermal baths. By means of a general inequality, we show that the Carnot efficiency can be obtained only when both the hot and cold baths are infinitely large. By further introducing a specific model where the baths are constituted of ensembles of finite-dimensional particles, we further demonstrate the relationship between the engine's power and efficiency, with the dimension of the working substance and the bath particles.
Keywords
Cite
@article{arxiv.1902.09378,
title = {Efficiency of a cyclic quantum heat engine with finite-size baths},
author = {M. Hamed Mohammady and Alessandro Romito},
journal= {arXiv preprint arXiv:1902.09378},
year = {2019}
}