On 4/19/2018 9:10 PM, agrayson2...@gmail.com wrote:
On Friday, April 20, 2018 at 1:18:32 AM UTC, Bruce wrote: From: *Bruno Marchal* <mar...@ulb.ac.be <javascript:>>On 18 Apr 2018, at 15:45, Bruce Kellett <bhke...@optusnet.com.au <javascript:>> wrote: From: *Bruno Marchal* <mar...@ulb.ac.be <javascript:>>On 17 Apr 2018, at 13:52, Bruce Kellett <bhke...@optusnet.com.au <javascript:>> wroteBut note particularly that the spin measurement is made in the basis chosen by the experimenter (by orienting his/her magnet).OK.The outcome of the measurement is + or -,For Alice and Bob, OK.not one of the possible infinite set of possible basis vector orientations. The orientation is not measured, it is chose by the experimenter. So that is one potential source of an infinite set of worlds eliminated right away. The singlet is a superposition of two states, + and -: it is not a superposition of possible basis vectors.? (That is far too ambiguous).????? It is not in the least ambiguous. The singlet state is not a superposition of basis vectors.? The singlet state is the superposition of Iup>IMinus> and (Minus>Iup>.Those are not generalized basis vectors: they are eigenfunctions of the spin projection operator in a particular basis. The singlet state is not a superposition of vectors from different bases.*Which particular basis; the UP/DN basis? Does this mean the two tensor product states defining the singlet state don't interfere with each other? *
No.
*Can you have superpositions of vectors from different bases? I don't think so/. /AG *
Sure you can. It just makes the math complicated. Brent -- 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 everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
