Many-body quantum dynamics of spin-orbit coupled Andreev states in a Zeeman field
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916276760215552 |
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| author | Zatsarynna, Kateryna Nava, Andrea Zazunov, Alex Egger, Reinhold |
| author_facet | Zatsarynna, Kateryna Nava, Andrea Zazunov, Alex Egger, Reinhold |
| contents | We provide a theoretical framework to describe the quantum many-body dynamics of Andreev states in Josephson junctions with spin-orbit coupling and a magnetic Zeeman field. In such cases, employing a doubled Nambu spinor description is technically advantageous but one then has to be careful to avoid double-counting problems. By deriving the Lindblad master equation in the socalled excitation picture, we show that a physically consistent many-body theory free from doublecounting problems follows. We apply our formalism to a study of dynamical parity stabilization of the Andreev sector at intermediate times after an initial microwave pulse, in particular addressing the combined effects of spin-orbit coupling and Zeeman field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_05485 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Many-body quantum dynamics of spin-orbit coupled Andreev states in a Zeeman field Zatsarynna, Kateryna Nava, Andrea Zazunov, Alex Egger, Reinhold Mesoscale and Nanoscale Physics Superconductivity We provide a theoretical framework to describe the quantum many-body dynamics of Andreev states in Josephson junctions with spin-orbit coupling and a magnetic Zeeman field. In such cases, employing a doubled Nambu spinor description is technically advantageous but one then has to be careful to avoid double-counting problems. By deriving the Lindblad master equation in the socalled excitation picture, we show that a physically consistent many-body theory free from doublecounting problems follows. We apply our formalism to a study of dynamical parity stabilization of the Andreev sector at intermediate times after an initial microwave pulse, in particular addressing the combined effects of spin-orbit coupling and Zeeman field. |
| title | Many-body quantum dynamics of spin-orbit coupled Andreev states in a Zeeman field |
| topic | Mesoscale and Nanoscale Physics Superconductivity |
| url | https://arxiv.org/abs/2404.05485 |