Exploring the nature of gravity with quantum information methods
Abstract
The aim of this article is to provide an introduction to the use of quantum information methods for investigating the interface between quantum theory and gravity. To this end, we discuss the basic principles of two current research streams that use this approach. The first one explores a phenomenon known as gravitationally induced entanglement, which aims to infer whether the gravitational field responsible for the interaction between two massive bodies must be quantized or not. The second stream investigates causal structures, thereby providing indirect evidence that spacetime may exhibit non-classical behavior. Before presenting these topics, we briefly review some fundamental concepts and experiments from quantum information theory, such as the Mach-Zehnder interferometer, the Stern-Gerlach experiment, Bell inequalities and entanglement, and the language of quantum circuits.
Cite
@article{arxiv.2512.20429,
title = {Exploring the nature of gravity with quantum information methods},
author = {Bruna Sahdo and Natália Salomé Móller},
journal= {arXiv preprint arXiv:2512.20429},
year = {2025}
}
Comments
This manuscript is based on an article that was published in Brazilian portuguese language in the journal Revista Brasileira de Ensino de F\'isica, vol. 47, suppl. 3, e20250371 (2025), https://doi.org/10.1590/1806-9126-RBEF-2025-0371