On Tue, Dec 10, 2013 at 4:00 PM, meekerdb <[email protected]> wrote:
> On 12/10/2013 1:22 PM, Quentin Anciaux wrote: > > I think I was attempting to position myself between John and >>> Jason - to say that determinism is reasonably well established, but only as >>> a result of a long and winding process of experiment, conjecture and so on. >>> >>> >>> >>> But it isn't. As Roland Omnes says, quantum mechanics is a >>> probabilistic theory so it predicts probabilities - what did you expect? >>> Among apostles of Everett there's a lot of trashing of Copenhagen. But >>> Bohr's idea was that the classical world, where things happened and results >>> were recorded, was *logically* prior to the quantum mechanics. QM was a >>> way of making predictions about what could done and observed. Today what >>> might be termed neo-Copenhagen is advocated by Chris Fuchs and maybe Scott >>> Aronson. I highly recommend Scott's book "Quantum Computing Since >>> Democritus". It's kind of heavy going in the middle, but if you're just >>> interested in the philosophical implications you can skip to the last >>> chapters. Violation of Bell's inequality can be used to guarantee the >>> randomness of numbers, http://arxiv.org/pdf/0911.3427v3.pdf, assuming >>> only locality. >>> >>> >>> >> Bell's theorm proves that local hidden variables are impossible which >> leaves only two remaining explanations that explain the EPR paradox: >> >> 1. Non-local, faster-than-light, relativity violating effects >> >> >> That's non-local hidden variable - which is exactly what a parallel >> universe is. >> >> >> What is non local here? >> >> >> A whole world is duplicated - including remote parts. >> >> > No decoherence is spread through the environment at light speed. > > > But if the EPR particles are measured at spacelike intervals there are two > light cones of decoherence spreading through the environment - BUT they are > coherent so that only two constructively interfere. There result only two > worlds, instead of four. > The positron and electron already interacted. The state of the system isn't (e↑ + e↓) + (p↓ × p↑) it is (e↑ × p↓) + (e↓ × p↑). There is a partitions of non-interacting, non-correlated states, for which there are two. Interacting with either one of the electron or the positron puts you into one a superposition of those two states. Jason -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
