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Stochastic-thermodynamics and the Ericsson nano engine – Efficiency from equilibrium results

Author

Listed:
  • Kaur, J.
  • Ghosh, A.
  • Dattagupta, S.
  • Chaturvedi, S.
  • Bandyopadhyay, M.

Abstract

In this work, we study an Ericsson cycle whose working substance is a charged (quantum) oscillator in a magnetic field that is coupled to a heat bath. The resulting quantum Langevin equations with built-in noise terms encapsulate a thermodynamic structure and allow for the computation of the efficiency of the cycle. We numerically compute the efficiency of the cycle in the quasi-static regime using the steady-state thermodynamic functions of the system. Interestingly, it is found that by increasing the system–bath coupling strength, the efficiency of the cycle can be tuned to a maximum. We also explore the behavior of the efficiency as a function of the pair of magnetic-field values between which the cycle is operated.

Suggested Citation

  • Kaur, J. & Ghosh, A. & Dattagupta, S. & Chaturvedi, S. & Bandyopadhyay, M., 2025. "Stochastic-thermodynamics and the Ericsson nano engine – Efficiency from equilibrium results," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 660(C).
    • Handle: RePEc:eee:phsmap:v:660:y:2025:i:c:s0378437124008379
    DOI: 10.1016/j.physa.2024.130327
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