Quantum Fisher information of a cosmic qubit undergoing non-Markovian de Sitter evolution
Abstract We revisit the problem of the thermalization process for an Unruh-DeWitt (UDW) detector in de Sitter space. We derive the complete dynamics of the detector in the context of an open quantum system, without utilizing Markovian or RWA approximations. We employ quantum Fisher information (QFI)...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2025)029 |
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