On Tue, Dec 10, 2013 at 4:00 PM, meekerdb <meeke...@verizon.net> 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.