In a recent paper entitled > “Nothing happens in the Universe of the Everett Interpretation”: > http://arxiv.org/abs/1210.8447 > Jan-Markus Schwindt has presented an impressive argument against the > many-world interpretation of quantum mechanics. > > The argument he presents is not new, but, in my opinion, nobody ever > presented this argument so clearly. > > In a nutshell, the argument is this: > To define separate worlds of MWI, one needs a preferred basis, which is an > old well-known problem of MWI. In modern literature, one often finds the > claim that the basis problem is solved by decoherence. What J-M Schwindt > points out is that decoherence is not enough. Namely, decoherence solves > the basis problem only if it is already known how to split the system into > subsystems (typically, the measured system and the environment). But if the > state in the Hilbert space is all what exists, then such a split is not > unique. Therefore, MWI claiming that state in the Hilbert space is all what > exists cannot resolve the basis problem, and thus cannot define separate > worlds. Period! One needs some additional structure not present in the > states of the Hilbert space themselves. > > As reasonable possibilities for the additional structure, he mentions > observers of the Copenhagen interpretation, particles of the Bohmian > interpretation, and the possibility that quantum mechanics is not > fundamental at all. > source <http://www.physicsforums.com/blog.php?b=4289>
-- You received this message because you are subscribed to the Google Groups "Everything List" group. To view this discussion on the web visit https://groups.google.com/d/msg/everything-list/-/Q1VtaPn4etMJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.
