Invariant Measures in Hamiltonian Systems: The Analytical Foundations of Statistical Physics
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arXiv
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866915962186366976 |
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| author | Cedeño-Pérez, Luis A. López-Velázquez, Alexis E. |
| author_facet | Cedeño-Pérez, Luis A. López-Velázquez, Alexis E. |
| contents | We construct a measure in the hamiltonian function level sets that is invariant under the hamiltonian flow for short times and flow preserving for arbitrarily long times. This allows a probabilistic approach to the study of hamiltonian systems, in the space of states with fixed energy. We prove that this measure generates the microcanonical partition function employed in physics and show that it can be transformed into the canonical partition function in an asymptotic limit, hence reproducing classical Statistical Physics. We also argue that this gives an alternative solution to Simon's second problem. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_25066 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Invariant Measures in Hamiltonian Systems: The Analytical Foundations of Statistical Physics Cedeño-Pérez, Luis A. López-Velázquez, Alexis E. Mathematical Physics We construct a measure in the hamiltonian function level sets that is invariant under the hamiltonian flow for short times and flow preserving for arbitrarily long times. This allows a probabilistic approach to the study of hamiltonian systems, in the space of states with fixed energy. We prove that this measure generates the microcanonical partition function employed in physics and show that it can be transformed into the canonical partition function in an asymptotic limit, hence reproducing classical Statistical Physics. We also argue that this gives an alternative solution to Simon's second problem. |
| title | Invariant Measures in Hamiltonian Systems: The Analytical Foundations of Statistical Physics |
| topic | Mathematical Physics |
| url | https://arxiv.org/abs/2604.25066 |