https://doi.org/10.1140/epjc/s10052-024-12831-5
Regular Article - Theoretical Physics
Gravity-induced entanglement between two massive microscopic particles in curved spacetime: II. Friedmann–Lemaître–Robertson–Walker universe
1
Department of Physics, Nanchang University, 330031, Nanchang, China
2
Center for Relativistic Astrophysics and High Energy Physics, Nanchang University, 330031, Nanchang, China
3
GCAP-CASPER, Physics Department, Baylor University, 76798-7316, Waco, TX, USA
4
Center for Gravitation and Cosmology, Yangzhou University, Yangzhou, China
Received:
30
January
2024
Accepted:
19
April
2024
Published online:
14
May
2024
In our previous work (Zhang and Shu in Eur Phys J. C 84(3):256, 2024), we have explored quantum gravity induced entanglement of masses (QGEM) in curved spacetime, observing entanglement formation between particles moving along geodesics in a Schwarzschild spacetime background. We find that long interaction time induces entanglement, even for particles with microscopic mass, addressing decoherence concerns. In this work, we build upon our previous work (Zhang and Shu 2024) by extending our investigation to a time-dependent spacetime. Specifically, we explore the entanglement induced by the mutual gravitation of massive particles in the Friedmann–Lemaître–Robertson–Walker (FLRW) universe. With the help of the phase shift and the QGEM spectrum, our proposed scheme offers a potential method for observing the formation of entanglement caused by the quantum gravity of massive particles as they propagate in the FLRW universe. Consequently, it provides insights into the field of entanglement in cosmology.
© The Author(s) 2024
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