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Gravity from entropy: A radical new approach to unifying quantum mechanics and general relativity

Faculty of Science and Engineering  Centre for Complex Systems 

4 March 2025

Diagrammatic representation of the entropic quantum gravity action. The action for gravity is given by the quantum relative entropy between the metric of the manifold and the metric induced by the matter field and the geometry.
Diagrammatic representation of the entropic quantum gravity action. The action for gravity is given by the quantum relative entropy between the metric of the manifold and the metric induced by the matter field and the geometry.

In a new study published in Physical Review D Professor Ginestra Bianconi, Professor of Applied Mathematics at Queen Mary University of London, proposes a groundbreaking new framework that could revolutionise our understanding of gravity and its relationship with quantum mechanics.

The study, titled Gravity from Entropy, introduces a novel approach that derives gravity from quantum relative entropy, bridging the gap between two of the most fundamental yet seemingly incompatible theories in physics: quantum mechanics and Einstein's general relativity.

Read more: https://www.qmul.ac.uk/media/news/2025/science-and-engineering/se/gravity-from-entropy-a-radical-new-approach-to-unifying-quantum-mechanics-and-general-relativity.html

Updated by: Ilyana Zolotareva