Physicists Observe ‘Unobservable’ Quantum Phase Transition

In 1935, Albert Einstein and Erwin Schrödinger, two of the most prominent physicists of the day, got into a dispute over the nature of reality. Einstein had done the math and knew that the universe must be local, meaning that no event in one location could instantly affect a distant location. But Schrödinger had done his own math, and he knew that at the heart of quantum mechanics lay a strange...


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