Quantum sounds could reveal the shape of the universe

Applied Mathematics Professor and Canada Research Chair Achim Kempf recently published work which develops new tools that may help unify quantum theory and the theory of general relativity. The tools involve calculating the shape of an object just from its sound. Theoretically this could be used to determine the shape of spacetime from the ringing caused by quantum fluctuations. More detail can be found here: https://uwaterloo.ca/news/quantum-sounds-could-reveal-shape-universe.