https://doi.org/10.1140/epjd/s10053-025-01011-z
Regular Article - Molecular Physics and Chemical Physics
Quantum Stirling heat engine in Tsallis formalism
1
Department of Physics, College of Sciences, Jahrom University, 74135-111, Jahrom, Iran
2
Department of Physics, College of Sciences, Yasouj University, 75918, Yasouj, Iran
Received:
6
March
2025
Accepted:
17
May
2025
Published online:
12
June
2025
The proposed quantum Stirling machine is a groundbreaking advancement in the field of quantum machines. The machine is used as a highly efficient heat engine and an innovative refrigerator. In our analysis, we examine the property of the machine by treating its working substance as a two-qubit Heisenberg model operating under the influence of a magnetic field within the framework of Tsallis formalism. The novelty of this work is to use the non-extensive thermodynamics in studying the quantum Stirling machine. We investigate the influence of the non-extensive Tsallis parameter and magnetic field on various aspects of the Stirling heat engine and refrigerator, including absorbed heat, released heat, work done, efficiency, and performance coefficient (PC). The findings show that the non-extensive parameter has an important role in the efficiency and PC. The best value for the efficiency can be obtained when the non-extensive parameter approaches one, whereas it occurs for the PC when the parameter approaches 0.1. By carefully selecting the system parameters, it is possible to optimize the Stirling cycle's efficiency and PC, allowing it to function effectively as both a heat engine and a refrigerator.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
