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Optimum performance characteristics and maximum power output of a low-dissipation quantum heat engine

Author

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  • Chen, Jingyi
  • Wang, Junyi
  • Pan, Yuzhuo
  • Su, Shanhe
  • Chen, Jincan

Abstract

This study presents a low-dissipation quantum heat engine cycle and analyzes its performance characteristics. Based on the slow driven perturbation theory, the analytic expansion of heat in powers of time is derived. Employing the method of Lagrange multiplier, we establish a constraint relation between the efficiency and the power output. The performances of the low-dissipation heat engine are optimally analyzed by considering the different objective functions. The results underscore the significance of operating the low-dissipation quantum heat engine cycle within the optimal region to attain the large power output and high efficiency simultaneously. These findings contribute to the understanding and optimization of low-dissipation quantum heat engines, providing insights for the development of efficient energy conversion technologies.

Suggested Citation

  • Chen, Jingyi & Wang, Junyi & Pan, Yuzhuo & Su, Shanhe & Chen, Jincan, 2025. "Optimum performance characteristics and maximum power output of a low-dissipation quantum heat engine," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 677(C).
    • Handle: RePEc:eee:phsmap:v:677:y:2025:i:c:s0378437125005680
    DOI: 10.1016/j.physa.2025.130916
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