Local arrows of time in quantum many-body systems
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911262455103488 |
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| author | Yates, Andrew G. Cotler, Jordan Maskara, Nishad Lukin, Mikhail D. |
| author_facet | Yates, Andrew G. Cotler, Jordan Maskara, Nishad Lukin, Mikhail D. |
| contents | We demonstrate that in quantum many-body systems, local arrows of time can differ from the global time $t$ induced by Hamiltonian evolution. That is, within a quantum many-body system, the flow of time can be relative to each observer or by proxy each local subsystem. We provide a definition of local arrows of time in quantum many-body systems, and explain their relation to spacetime quantum entropies. Then we give a variety of numerical and analytical examples which explore different ways in which local arrows of time can manifest in quantum many-body dynamics, including exotic arrows of time arising from quantum thermalization and quantum error correction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_09758 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Local arrows of time in quantum many-body systems Yates, Andrew G. Cotler, Jordan Maskara, Nishad Lukin, Mikhail D. Quantum Physics Strongly Correlated Electrons We demonstrate that in quantum many-body systems, local arrows of time can differ from the global time $t$ induced by Hamiltonian evolution. That is, within a quantum many-body system, the flow of time can be relative to each observer or by proxy each local subsystem. We provide a definition of local arrows of time in quantum many-body systems, and explain their relation to spacetime quantum entropies. Then we give a variety of numerical and analytical examples which explore different ways in which local arrows of time can manifest in quantum many-body dynamics, including exotic arrows of time arising from quantum thermalization and quantum error correction. |
| title | Local arrows of time in quantum many-body systems |
| topic | Quantum Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2511.09758 |