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Optimal performance of a three stroke heat engine in the microscopic regime

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arXiv:2404.13461v1 Announce Type: new
Abstract: In the microscopic regime, we consider a stroke-based heat engine that utilizes the temperature difference between two heat baths to produce work using a working body. The working body of the engine aims to extract heat from the hot heat bath, generate work, and discharge the surplus heat into the cold heat bath through the successive execution of three strokes. We discuss the thermodynamic framework for such an engine that involves any arbitrary-dimensional working body. Next, our investigation focuses on the smallest version of this engine, which involves a two-level working body, resulting in a closed expression for optimal work production and efficiency. Furthermore, we investigate the possibility of realizing such an engine within the Jaynes-Cummings model, gaining insights into optimal work production and efficiency. Finally, we scale down the engine, taking into account finite-dimensional heat baths, and obtain the expressions for optimal work and efficiency in this scenario.

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