Fixing semi-classical physics from first principles: how to derive effective classical-quantum dynamics from open quantum theory
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915926857744384 |
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| author | Layton, Isaac |
| author_facet | Layton, Isaac |
| contents | Semi-classical approaches approximate fully quantum descriptions with partially classical ones. Here we use a toy model to highlight the failings of the standard mean-field semi-classical approach, and show how including environmental decoherence can lead to improved semi-classical theories that are exact descriptions of the original quantum dynamics. In doing so, we show how consistent models of classical-quantum dynamics can arise as effective descriptions of open quantum systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_08024 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Fixing semi-classical physics from first principles: how to derive effective classical-quantum dynamics from open quantum theory Layton, Isaac Quantum Physics Semi-classical approaches approximate fully quantum descriptions with partially classical ones. Here we use a toy model to highlight the failings of the standard mean-field semi-classical approach, and show how including environmental decoherence can lead to improved semi-classical theories that are exact descriptions of the original quantum dynamics. In doing so, we show how consistent models of classical-quantum dynamics can arise as effective descriptions of open quantum systems. |
| title | Fixing semi-classical physics from first principles: how to derive effective classical-quantum dynamics from open quantum theory |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2604.08024 |