Really interesting proof framework setup here. Set-theoretical operations on “experiment plots.”
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Provocative claim: "Single-world" interpretations of quantum theory cannot be self-consistent.
arxiv.org/abs/1604.07422
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note that this is no different that classical mechanics when you include the initial measurement error
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My understanding is that electron spin stochasticity is not explicable by classical initial measurement error. But IANAP. ;)
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From what I recall, if you know complete state of system at any time, equations describe complete state over all time…
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The wave function can be known exactly, but using the wave fn to measure e.g. position is stochastic: en.wikipedia.org/wiki/Wave_func
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The wave function of the complete system can be known? The complete system includes the thing doing the measuring.
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I don’t think that is true, but I’d need to reread some of my college textbooks to make the argument. :)
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That what is true? That the complete state of the universe includes experimental physicists? :)
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No, specifically that you can model the measurer of the exactly-known wave function and get an exactly-known wave function.
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I don’t understand. Is the measurer some supernatural entity? Are people not made of the same kind of particles?
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I think the issue arises in composition, but I honestly can’t make an argument for it with my working knowledge.