Quantum gravitational deflection of parallel matter wave beams

TL;DR

This paper proposes a theoretical model predicting a quantum gravity-induced tidal deflection in parallel matter wave beams, suggesting an experimental approach to detect quantum gravity effects via Bose-Einstein condensates.

Contribution

It introduces a novel quantum gravity effect on matter waves and proposes an experimental setup to observe this irreducible noise in geodesic separation.

Findings

Quantum gravity induces a tidal deflection in parallel matter wave beams.

A measurable standard deviation in geodesic separation is predicted.

The model extends understanding of quantum gravity effects beyond photons.

Abstract

It is well known that two parallel photon beams do not deflect under the effect of their energy-momentum tensor. In this work, we propose a novel model where two spatially separated Bose-Einstein condensates are outcoupled to create two parallel atom laser beams. We find out that apart from the classical deflection, a purely quantum gravity induced tidal deflection is observed which results in an irreducible noise in the geodesic separation of the two beams. Based on this simple but novel theoretical outcome, we propose an experimental model for detecting this quantum gravity induced standard deviation in the geodesic separation of the two parallel matter-wave beams.