Probing the quantum fuzziness of space and time with gravitational waves

摘要

We argue that the gravitational wave signal recently observed by the LIGO detectors provides a powerful tool to probe the fundamental structure of space and time. In particular, we properly model the inspiral phase of two merging black holes in a noncommutative spacetime and extract an upper bound on the scale of such quantum fuzziness at the order of the Planck scale. This improves previous constraints by ～15 orders of magnitude.