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| Main Author: | |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.15392 |
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| _version_ | 1866914334215503872 |
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| author | Crooks, Gavin E. |
| author_facet | Crooks, Gavin E. |
| contents | It has long been known that the relative entropy of a non-equilibrium ensemble to the corresponding equilibrium ensemble is the excess free energy. We show that the reverse relative entropy also has a thermodynamic interpretation: it is the excess free energy of a dual ensemble in which the roles of energy and entropy are interchanged. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_15392 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Dual thermodynamic ensembles, relative entropies, and excess free energy Crooks, Gavin E. Statistical Mechanics It has long been known that the relative entropy of a non-equilibrium ensemble to the corresponding equilibrium ensemble is the excess free energy. We show that the reverse relative entropy also has a thermodynamic interpretation: it is the excess free energy of a dual ensemble in which the roles of energy and entropy are interchanged. |
| title | Dual thermodynamic ensembles, relative entropies, and excess free energy |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2602.15392 |