Rotating-Wave and Secular Approximations for Open Quantum Systems
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866913025756233728 |
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| author | Burgarth, Daniel Facchi, Paolo Gramegna, Giovanni Yuasa, Kazuya |
| author_facet | Burgarth, Daniel Facchi, Paolo Gramegna, Giovanni Yuasa, Kazuya |
| contents | We derive a nonperturbative bound on the distance between evolutions of open quantum systems described by time-dependent generators. We show how this result can be employed to provide an explicit upper bound on the error of the rotating-wave approximation in the presence of dissipation and decoherence. We apply the derived bound to the strong-coupling limit in open quantum systems and to the secular approximation used to obtain a master equation from the Redfield equation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_26606 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Rotating-Wave and Secular Approximations for Open Quantum Systems Burgarth, Daniel Facchi, Paolo Gramegna, Giovanni Yuasa, Kazuya Quantum Physics Mathematical Physics We derive a nonperturbative bound on the distance between evolutions of open quantum systems described by time-dependent generators. We show how this result can be employed to provide an explicit upper bound on the error of the rotating-wave approximation in the presence of dissipation and decoherence. We apply the derived bound to the strong-coupling limit in open quantum systems and to the secular approximation used to obtain a master equation from the Redfield equation. |
| title | Rotating-Wave and Secular Approximations for Open Quantum Systems |
| topic | Quantum Physics Mathematical Physics |
| url | https://arxiv.org/abs/2603.26606 |