Quantum Level‐Crossing Induced by Anisotropy in Spin‐1 Heisenberg Dimers: Applications to Quantum Stirling Engines
Abstract This work explores the thermodynamic performance of a quantum Stirling heat engine implemented with an anisotropic spin‐1 Heisenberg dimer as the working medium. Using the Hamiltonian of the system, the interplay of anisotropy, magnetic field, and exchange interactions and their influence is analyzed on the energy spectrum and the quantum level crossing. These results reveal that double‐degenerate point (DDP) and a triple‐degenerate point (TDP) play pivotal roles in shaping the operational regimes and efficiency of the quantum Stirling engine. At those points, the Carnot efficiency reaches higher work output and enhanced stability, making it a robust candidate for optimal thermodynamic performance. These findings highlight the potential of anisotropic spin systems as viable platforms for quantum heat engines and contribute to advancing the field of quantum thermodynamics.
Authors
- V. G. de Paula (ORCID: https://orcid.org/0000-0002-6859-2917)
- P. Vargas
- Francisco J. Peña (ORCID: https://orcid.org/0000-0002-7432-0707)
- Clebson Cruz (ORCID: https://orcid.org/0000-0003-3318-1111)
- Bastián Castorene (ORCID: https://orcid.org/0009-0002-9075-5716)
- Màrio Reis (ORCID: https://orcid.org/0000-0002-3349-3003)
Institutions
- Pontificia Universidad Católica de Valparaíso (CL)
- Universidade Federal Fluminense (BR)
- Universidade Federal do Oeste da Bahia (BR)
- Federico Santa María Technical University (CL)
Publication Details
- Journal
- Advanced Quantum Technologies
- Published
- 2025-07-01
- DOI
- https://doi.org/10.1002/qute.202500204
- Citations
- 1
- Primary Topic
- Mechanical and Optical Resonators
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- Universidad Técnica Federico Santa María
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- Ministério da Ciência, Tecnologia e Ensino Superior
- Fundação de Amparo à Pesquisa do Estado da Bahia
- Pontificia Universidad Católica de Valparaíso
- Agencia Nacional de Investigación y Desarrollo
- Centro de Investigação em Materiais Cerâmicos e Compósitos
- Fundação para a Ciência e a Tecnologia
- Fondo Nacional de Desarrollo Científico y Tecnológico