Search 205,615,549 papers from all fields of science

Search

Sign InCreate Free Account

Corpus ID: 244714234

Leggett-Garg inequalities for testing quantumness of gravity

@inproceedings{Matsumura2021LeggettGargIF,
title={Leggett-Garg inequalities for testing quantumness of gravity},
author={Akira Matsumura and Yasusada Nambu and Kazuhiro Yamamoto},
year={2021}
}

In this study, we determine a violation of the Leggett-Garg inequalities due to gravitational interaction in a hybrid system consisting of a harmonic oscillator and a spatially localized superposed particle. The violation of the Leggett-Garg inequalities is discussed using the two-time quasiprobability in connection with the entanglement negativity generated by gravitational interaction. It is demonstrated that the entanglement suppresses the violation of the Leggett-Garg inequalities when one… Expand

We explore a general feature of the interaction mediated by the gravitational ﬁelds of spatially superposed masses. For this purpose, based on quantum information theory, we characterize the… Expand

We investigate quantum entanglement due to gravity in terms of coherence of quantum object. As a basic setting, we consider two gravitating objects each in a superposition state of two paths. It is… Expand

The Bose–Marletto–Vedral (BMV) experiment [3, 4] is a proposal for testing the quantum nature of gravity with entanglement due to Newtonian gravity. This proposal has stimulated controversy on how… Expand

We investigate the quantum nature of gravitational interaction in terms of the coherence of quantum objects. As a basic setting, we consider two gravitating objects each in a superposition state of… Expand