https://doi.org/10.1140/epjp/s13360-023-04309-2
Regular Article
Graviton-mediated polarisation–polarisation entanglement of photons by means of the Schwinger–Keldysh and Kadanoff–Baym formalisms and quantum Boltzmann equations
ELI-NP, Horia Hulubei National Institute for R &D in Physics and Nuclear Engineering, 30 Reactorului St, 077125, Bucharest-Magurele, Romania
a
andrei.patrascu.11@alumni.ucl.ac.uk
Received:
6
May
2023
Accepted:
24
July
2023
Published online:
3
August
2023
In order to show that the graviton is a quantum entity, an experiment is proposed that can show that quantum entanglement is produced by means of an exchange of gravitons. For this to be possible, one has to be able to witness the entanglement between the two objects considered in the experiment and to be able to eliminate other sources of entanglement like the exchange of virtual photons. Graviton-mediated polarisation–polarisation photon entanglement is being analysed by methods originating from the Schwinger–Keldysh and the Kadanoff–Baym formalisms in conjunction with quantum Boltzmann-type equations. Applications in the context of cosmology are discussed.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
