Entanglement and decoherence of massive particles due to gravity

TL;DR

This paper investigates how gravity can induce entanglement and cause decoherence among multiple massive particles, analyzing the dynamics and time scales of these quantum effects in linear configurations.

Contribution

It provides an analytical study of gravity-induced entanglement and decoherence in a linear array of particles, highlighting the impact of particle number and initial entanglement.

Findings

Decoherence increases with particle number due to gravitational interactions.

The time scale of gravity-induced decoherence is analytically derived.

Gravity-induced entanglement exhibits monogamy properties.

Abstract

We analyze the dynamics of a gravity-induced entanglement for N massive particles. Considering the linear configuration of these particles, we investigate the entanglement between a specific pair of particles under the influence of the gravitational interaction between the massive particles. As the particle number increases, the specific particle pair decoheres more easily due to the gravitational interaction with other particles. The time scale of the gravity-induced decoherence is analytically determined. We also discuss the entanglement dynamics of initially entangled particles, which exemplify the monogamy of the gravity-induced entanglement.