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Phase-space interference in extensive and nonextensive quantum heat engines.

Ali Ü C Hardal1, Mauro Paternostro2, Özgür E Müstecaplıoğlu3

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Quantum interference in many-body systems drives nonclassical performance in quantum heat engines. The working medium

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Area of Science:

  • Quantum thermodynamics
  • Many-body physics
  • Quantum information

Background:

  • Quantum interference is a fundamental phenomenon distinguishing quantum mechanics from classical physics.
  • Quantum heat engines offer a framework for exploring thermodynamic processes at the quantum level.

Purpose of the Study:

  • To investigate the role of quantum interference in the performance of quantum heat engines.
  • To understand how the properties of the many-body working medium influence quantum effects in engine performance.

Main Methods:

  • Theoretical analysis of a quantum heat engine model.
  • Investigation of quantum interference effects within a many-body working medium.
  • Examination of the relationship between working medium properties and engine output.

Main Results:

  • Quantum interference effects in a many-body working medium are responsible for genuinely nonclassical features in quantum heat engine performance.
  • The manifestation of quantum interference in work output is strongly dependent on the extensive nature of the working medium.
  • Identification of specific classes of working substances that optimize engine performance.

Conclusions:

  • Quantum interference is crucial for achieving nonclassical performance in quantum heat engines.
  • The design and composition of the many-body working medium are critical for maximizing work output and efficiency.
  • Results provide insights into optimizing the size of quantum working media for enhanced energy machine performance.