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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Replying to @seanmcarroll @evantthompson and
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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Replying to @seanmcarroll @evantthompson and
(I'll be saying words to this effect at the PSA in Seattle next week, if you're there.)
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Thanks, yes, I'll be there but only for one day. I'll check to see if your session is on the same day as mine.
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