Boosting engine performance with Bose-Einstein condensation
Statistical Mechanics
2022-02-04 v1 Quantum Gases
Quantum Physics
Abstract
At low-temperatures a gas of bosons will undergo a phase transition into a quantum state of matter known as a Bose-Einstein condensate (BEC), in which a large fraction of the particles will occupy the ground state simultaneously. Here we explore the performance of an endoreversible Otto cycle operating with a harmonically confined Bose gas as the working medium. We analyze the engine operation in three regimes, with the working medium in the BEC phase, in the gas phase, and driven across the BEC transition during each cycle. We find that the unique properties of the BEC phase allow for enhanced engine performance, including increased power output and higher efficiency at maximum power.
Cite
@article{arxiv.2110.14832,
title = {Boosting engine performance with Bose-Einstein condensation},
author = {Nathan M. Myers and Francisco J. Peña and Oscar Negrete and Patricio Vargas and Gabriele De Chiara and Sebastian Deffner},
journal= {arXiv preprint arXiv:2110.14832},
year = {2022}
}
Comments
23 pages, 6 figures