Intrinsic Hamiltonian of Mean Force and Strong-Coupling Quantum Thermodynamics
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911594905075712 |
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| author | González, Ignacio Chakraborty, Sagnik Rivas, Ángel |
| author_facet | González, Ignacio Chakraborty, Sagnik Rivas, Ángel |
| contents | We present a universal thermodynamic framework for quantum systems that may be strongly coupled to thermal environments. Unlike previous approaches, our method enables a clear definition of thermostatic properties while preserving the same gauge freedoms as in the standard weak-coupling regime and retaining the von Neumann expression for thermodynamic entropy. Furthermore, it provides a formulation of general first and second laws using only variables accessible through microscopic control of the system, thereby enhancing experimental feasibility. We validate the framework by applying it to a paradigmatic model of strong coupling with a structured bosonic reservoir. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_02888 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Intrinsic Hamiltonian of Mean Force and Strong-Coupling Quantum Thermodynamics González, Ignacio Chakraborty, Sagnik Rivas, Ángel Quantum Physics Mesoscale and Nanoscale Physics Statistical Mechanics We present a universal thermodynamic framework for quantum systems that may be strongly coupled to thermal environments. Unlike previous approaches, our method enables a clear definition of thermostatic properties while preserving the same gauge freedoms as in the standard weak-coupling regime and retaining the von Neumann expression for thermodynamic entropy. Furthermore, it provides a formulation of general first and second laws using only variables accessible through microscopic control of the system, thereby enhancing experimental feasibility. We validate the framework by applying it to a paradigmatic model of strong coupling with a structured bosonic reservoir. |
| title | Intrinsic Hamiltonian of Mean Force and Strong-Coupling Quantum Thermodynamics |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2506.02888 |