Completely top–down hierarchical structure in quantum mechanicshttp://www.pnas.org/content/early/2018/10/19/1807554115 …
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This seems like an application of, but not a change to, the well-known idea that a quantum wave function is more than just information about its individual components. Entanglement is a kind of global information.
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If that's "strong emergence," it's not a very interesting kind. In QM the "reductionist" picture isn't one based on individual subsystems, it's one that takes the quantum state of the whole system as fundamental. And it works perfectly well here.
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