They describe using Bell-Theorem-like inequality to refute a real-numbers-only quantum theory is equivalent to imaginary-numbers quantum theory
The secret, he found, was to stick the particle in a “disordered” quantum landscape, one dotted with peaks and valleys. Each location would have a random height, representing a random energy. In a real material, this disorder might come from impurities such as missing atoms or atoms of different elements.
If it turns out that ... the particles that make up dark matter have an extremely small mass, then this galaxy's unusual properties would demonstrate the properties of quantum physics, but on a galactic scale. “If this hypothesis is confirmed, it would be one of the most beautiful demonstrations of nature, unifying the world of the smallest with that of the largest,“
Carlo Rovelli in his new book Helgoland
