Bohmian Quantum Gravity
Abstract
The recent experimental proposals by Bose et al. and Marletto et al. (BMV) outline a way to test for the quantum nature of gravity by measuring gravitationally induced differential phase accumulation over the superposed paths of two 1014 kg masses. BMV outline the expected outcome of these experiments for semiclassical, quantum gravity and collapse models. BMV finds that both semiclassical and collapse models predict a lack of entanglement in the experimental results. This work predicts the outcome of the BMV experiment in Bohmian trajectory gravity  where classical gravity is assumed to couple to the particle configuration in each Bohmian path, as opposed to semiclassical gravity where gravity couples to the expectation value of the wave function, or of quantized gravity, where the gravitational field is itself in a quantum superposition. In the case of the BMV experiment, Bohmian trajectory gravity predicts that there will quantum entanglement. This is surprising as the gravitational field is treated classically. A discussion of how Bohmian trajectory gravity can induce quantum entanglement for a nonsuperposed gravitational field is put forward.
nSCIr Canada.
 Publication:

APS April Meeting Abstracts
 Pub Date:
 2021
 Bibcode:
 2021APS..APRE17007A