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In Nature, 646, 813 (2025), Aziz and Howl claim that classical (unquantised) gravity produces entanglement.
Entanglement from the vacuum
Reznik, B · 2003
Earlier work this paper cites.
Fundamental destruction of information and conservation laws (2009)
Oppenheim, J. & Reznik, B · 2009
Earlier work this paper cites.
Spin entanglement witness for quantum gravity
Bose, S. et al · 2017
Earlier work this paper cites.
Gravitationally induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity
Marletto, C. & Vedral, V · 2017
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Witnessing nonclassicality beyond quantum theory
Marletto, C. & Vedral, V · 2020
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The two classes of hybrid classical-quantum dynamics (2022)
Oppenheim, J., Sparaciari, C., Šoda, B. & Weller-Davies, Z · 2022
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A postquantum theory of classical gravity?
Oppenheim, J · 2023
Cited alongside, same era.
A healthier semi-classical dynamics
Layton, I., Oppenheim, J. & Weller-Davies, Z · 2024
Cited alongside, same era.
Quantum-information methods for quantum gravity laboratory-based tests
Marletto, C. & Vedral, V · 2025
Cited alongside, same era.
Classical theories of gravity produce entanglement
Aziz, J. & Howl, R · 2025
Cited alongside, same era.
Classical gravity cannot mediate entanglement
Marletto, C., Oppenheim, J., Vedral, V. & Wilson, E · 2025
Cited alongside, same era.
Classical gravity cannot mediate entanglement by local means (2025)
Marletto, C. & Vedral, V · 2025
No, classical spacetime can’t produce entanglement (2025)
Oppenheim, J · 2025
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Covariant path integrals for quantum fields back-reacting on classical space-time (2025)
Oppenheim, J. & Weller-Davies, Z · 2025
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No, classical gravity does not entangle quantized matter fields (2025)
Diósi, L · 2025
Closest in time.
Is there a ‘smoking gun’ test for quantum gravity?
Weller-Davies, Z · 2025
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Diósi-penrose model of classical gravity predicts gravitationally induced entanglement
Trillo, D. & Navascués, M · 2025
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Cited alongside, same era.