Scientists have discovered that the Aharonov-Bohm effect, previously observed in relation to magnetic fields, also applies to gravity. The Aharonov-Bohm effect is a quantum phenomenon in which particles can experience the influence of a field without directly interacting with it. In this case, researchers demonstrated that gravitational fields can affect particles that are not subject to gravitational forces. By launching rubidium atoms inside a vacuum chamber and observing their movement, scientists were able to filter out the effects of gravity and observe the Aharonov-Bohm influence on the particles. This research opens up new possibilities for studying subtle effects in gravitational systems and measuring fundamental constants of nature.
(Surprising content: The Aharonov-Bohm effect holds true for gravity as well as magnetic fields.)
https://www.sciencenews.org/article/quantum-particles-gravity-spacetime-aharonov-bohm-effect