Probing the curvature of the cosmos from quantum entanglement due to gravity
If gravity is fundamentally quantum, any two quantum particles must get entangled with each other due to their mutual interaction through gravity. This phenomenon, dubbed gravity-mediated entanglement, has led to recent efforts of detecting perturbative quantum gravity in table-top experimental setu...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325000693 |
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| author | Suddhasattwa Brahma Abhinove N. Seenivasan |
| author_facet | Suddhasattwa Brahma Abhinove N. Seenivasan |
| author_sort | Suddhasattwa Brahma |
| collection | DOAJ |
| description | If gravity is fundamentally quantum, any two quantum particles must get entangled with each other due to their mutual interaction through gravity. This phenomenon, dubbed gravity-mediated entanglement, has led to recent efforts of detecting perturbative quantum gravity in table-top experimental setups. In this paper, we generalize this to imagine two idealized massive oscillators, in their ground state, which get entangled due to gravity in an expanding universe, and find that the curvature of the background spacetime leaves its imprints on the resulting entanglement profile. Thus, detecting gravity-mediated entanglement from cosmological observations will open up an exciting new avenue of measuring the local expansion rate of the cosmos. |
| format | Article |
| id | doaj-art-9708e895465b4acb8b5baa994f2a5511 |
| institution | DOAJ |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-9708e895465b4acb8b5baa994f2a55112025-08-20T02:59:53ZengElsevierPhysics Letters B0370-26932025-03-0186213930910.1016/j.physletb.2025.139309Probing the curvature of the cosmos from quantum entanglement due to gravitySuddhasattwa Brahma0Abhinove N. Seenivasan1Higgs Centre for Theoretical Physics, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom; Corresponding author.School of Mathematical and Physical Sciences, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United KingdomIf gravity is fundamentally quantum, any two quantum particles must get entangled with each other due to their mutual interaction through gravity. This phenomenon, dubbed gravity-mediated entanglement, has led to recent efforts of detecting perturbative quantum gravity in table-top experimental setups. In this paper, we generalize this to imagine two idealized massive oscillators, in their ground state, which get entangled due to gravity in an expanding universe, and find that the curvature of the background spacetime leaves its imprints on the resulting entanglement profile. Thus, detecting gravity-mediated entanglement from cosmological observations will open up an exciting new avenue of measuring the local expansion rate of the cosmos.http://www.sciencedirect.com/science/article/pii/S0370269325000693 |
| spellingShingle | Suddhasattwa Brahma Abhinove N. Seenivasan Probing the curvature of the cosmos from quantum entanglement due to gravity Physics Letters B |
| title | Probing the curvature of the cosmos from quantum entanglement due to gravity |
| title_full | Probing the curvature of the cosmos from quantum entanglement due to gravity |
| title_fullStr | Probing the curvature of the cosmos from quantum entanglement due to gravity |
| title_full_unstemmed | Probing the curvature of the cosmos from quantum entanglement due to gravity |
| title_short | Probing the curvature of the cosmos from quantum entanglement due to gravity |
| title_sort | probing the curvature of the cosmos from quantum entanglement due to gravity |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325000693 |
| work_keys_str_mv | AT suddhasattwabrahma probingthecurvatureofthecosmosfromquantumentanglementduetogravity AT abhinovenseenivasan probingthecurvatureofthecosmosfromquantumentanglementduetogravity |