Interaction between macroscopic quantum systems and gravity

TL;DR

This paper reviews experimental and theoretical research on how macroscopic quantum systems, like superconductors, might interact with and alter gravitational fields, highlighting progress and open questions in this interdisciplinary field.

Contribution

It provides a comprehensive overview of the recent advances and unresolved issues in understanding the interplay between macroscopic quantum states and gravity.

Findings

Progress in experiments and models over recent decades

Potential for quantum macrosystems to influence local gravity

Many open questions remain in the field

Abstract

We review experiments and theoretical models about the possible mutual interplay between the gravitational field and materials in the superconducting state or other macroscopic quantum states. More generally, we focus on the possibility for quantum macrosystems in a coherent state to produce local alterations of the gravitational field in which they are immersed. This fully interdisciplinary research field has witnessed a conspicuous progress in the last decades, with hundreds of published papers, and yet several questions are still completely open.