https://doi.org/10.1140/epjc/s10052-024-12632-w
Regular Article - Theoretical Physics
Gravity-induced entanglement between two massive microscopic particles in curved spacetime: I. The Schwarzschild background
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:
28
February
2024
Published online:
11
March
2024
The experiment involving the entanglement of two massive particles through gravitational fields has been devised to discern the quantum attributes of gravity. In this paper, we present a scheme to extend this experiment’s applicability to more generalized curved spacetimes, with the objective of validating universal quantum gravity within broader contexts. Specifically, we direct our attention towards the quantum gravity induced entanglement of masses (QGEM) in astrophysical phenomena, such as particles traversing the interstellar medium. Notably, we ascertain that the gravitational field within curved spacetime can induce observable entanglement between particle pairs in both scenarios, even when dealing with particles significantly smaller than mesoscopic masses. Furthermore, we obtain the characteristic spectra of QGEM across diverse scenarios, shedding light on potential future experimental examinations. This approach not only establishes a more pronounced and extensive manifestation of the quantum influences of gravity compared to the original scheme but also opens avenues for prospective astronomical experiments. These experiments, aligned with our postulates, hold immense advantages and implications for the detection of quantum gravity and can be envisioned for future design.
© The Author(s) 2024
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