The Quantum Otto Heat Engine with a relativistically moving thermal bath

Abstract

We investigate the quantum thermodynamic cycle of a quantum heat engine carrying out an Otto thermodynamic cycle. We use the thermal properties of a moving heat bath with relativistic velocity with respect to the cold bath. As a working medium, we use a two-level system and a harmonic oscillator that interact with a moving heat bath and a static cold bath. In the current work, the quantum heat engine is studied in the high and low temperatures regime. Using quantum thermodynamics and the theory of open quantum system we obtain the total produced work, the efficiency and the efficiency at maximum power. The maximum efficiency of the Otto quantum heat engine depends only on the ratio of the minimum and maximum energy gaps. On the contrary, the efficiency at maximum power and the extracted work decreases with the velocity since the motion of the heat bath has an energy cost for the quantum heat engine. Furthermore, the efficiency at maximum power depends on the nature of the working medium.

16 pages, 4 figures

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• Quantum Thermodynamic Cycles and quantum heat engines
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• The second law, Maxwell's daemon and work derivable from quantum heat engines
• Minimal universal quantum heat machine
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Cited by in corpus (6)

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• Quantum Stirling heat engine with squeezed thermal reservoir
• Unruh quantum Otto engine in the presence of a reflecting boundary
• Spins-based Quantum Otto Engines and Majorisation
• Optimizations of Multilevel Quantum Heat Engine with N Noninteracting Fermions Based on Lenoir Cycle
• Quantum Otto engines at relativistic energies