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<p>The idea of a quantum heat engine (QHE) is an interesting problem in physics and engineering. The Stirling QHE is widely used in the field of quantum machines due to the simplicity of the Stirling cycle. In the present work, the performance of the Stirling QHE is examined by treating its working substance as a two-qubit Heisenberg model taking into account the Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEA) interaction, and a magnetic field within the framework of the Tsallis formalism. The novelty of the work is to use the non-extensive formalism to investigate the quantum Stirling engine. We study the influence of the non-extensive Tsallis parameter (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2025_5970_Article_IEq1.gif" Format="GIF" Height="12" Rendition="HTML" Resolution="72" Type="Linedraw" Width="12" /> </InlineMediaObject> <EquationSource Format="TEX">\(q\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>q</mi> </math></EquationSource> </InlineEquation>), KSEA parameter, and magnetic field on various aspects of the Stirling heat engine, including absorbed heat, released heat, work done, and efficiency. The best value for the efficiency of this QHE can be obtained by setting sufficient values for the system parameters such as the non-extensive parameter, KSEA parameter, and magnetic field. Here, we obtained a maximum value of 0.12 for the efficiency of the QHE at <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2025_5970_Article_IEq2.gif" Format="GIF" Height="12" Rendition="HTML" Resolution="72" Type="Linedraw" Width="12" /> </InlineMediaObject> <EquationSource Format="TEX">\(q\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>q</mi> </math></EquationSource> </InlineEquation>= 0.95.</p>

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Quantum Stirling Heat Engine in Tsallis Formalism Under KSEA Interaction

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • R. Khordad,
  • H. R. Rastegar Sedehi

摘要

The idea of a quantum heat engine (QHE) is an interesting problem in physics and engineering. The Stirling QHE is widely used in the field of quantum machines due to the simplicity of the Stirling cycle. In the present work, the performance of the Stirling QHE is examined by treating its working substance as a two-qubit Heisenberg model taking into account the Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEA) interaction, and a magnetic field within the framework of the Tsallis formalism. The novelty of the work is to use the non-extensive formalism to investigate the quantum Stirling engine. We study the influence of the non-extensive Tsallis parameter ( \(q\) q ), KSEA parameter, and magnetic field on various aspects of the Stirling heat engine, including absorbed heat, released heat, work done, and efficiency. The best value for the efficiency of this QHE can be obtained by setting sufficient values for the system parameters such as the non-extensive parameter, KSEA parameter, and magnetic field. Here, we obtained a maximum value of 0.12 for the efficiency of the QHE at \(q\) q = 0.95.