Detector-based measurement-induced state updates in AdS/CFT
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914430912036864 |
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| author | Balasubramanian, Vijay Keski-Vakkuri, Esko Pranzini, Nicola |
| author_facet | Balasubramanian, Vijay Keski-Vakkuri, Esko Pranzini, Nicola |
| contents | Conventional understandings of quantum theory hold that measurements change the state of an observed system following the Lüders update rule. Textbooks describe the application of this idea to non-relativistic systems, but extensions to relativistic and gravitating systems encounter subtleties. One consistent approach is via detector-based measurements. We study the effects of such measurements in a CFT with a holographic dual. We work out the boundary space-time regions associated to a Lüders update and how the outcome extends to modifications of the bulk gravity state. We explore information-theoretic consequences of this picture, and relate the information extracted by a measurement to updates of the semiclassical parameters of the bulk state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13457 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Detector-based measurement-induced state updates in AdS/CFT Balasubramanian, Vijay Keski-Vakkuri, Esko Pranzini, Nicola High Energy Physics - Theory General Relativity and Quantum Cosmology Quantum Physics Conventional understandings of quantum theory hold that measurements change the state of an observed system following the Lüders update rule. Textbooks describe the application of this idea to non-relativistic systems, but extensions to relativistic and gravitating systems encounter subtleties. One consistent approach is via detector-based measurements. We study the effects of such measurements in a CFT with a holographic dual. We work out the boundary space-time regions associated to a Lüders update and how the outcome extends to modifications of the bulk gravity state. We explore information-theoretic consequences of this picture, and relate the information extracted by a measurement to updates of the semiclassical parameters of the bulk state. |
| title | Detector-based measurement-induced state updates in AdS/CFT |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology Quantum Physics |
| url | https://arxiv.org/abs/2509.13457 |