> On 19 Aug 2018, at 21:36, Brent Meeker <[email protected]> wrote: > > > > On 8/19/2018 3:09 AM, Bruno Marchal wrote: >>> On 17 Aug 2018, at 22:59, Brent Meeker <[email protected]> wrote: >>> >>> >>> >>> On 8/17/2018 7:37 AM, Bruno Marchal wrote: >>>>> Of course, but that does not justify the idea that all branches pre-exist. >>>> But that is not exactly what I am saying. I am saying that some >>>> superposition can be interpreted as different superposition. When Alice >>>> choose her spin direction, she will chose a partition of the multiverse, >>>> which is a sort of multi-multiverse. Without this, not only we have FTL, >>>> but we get super-determinism. Alice is no more choosing anything. >>> But already with no-collapse multiverse you have super determinism. >> ? >> >> >> >>> The only question is where different branches of possibility diverge. >>> Alice's choosing is, in the usual case, a deterministic choice, not one >>> that produces or identifies her with a different branch than the one before >>> her choice. It just muddles the argument to introduce the measurement >>> directions as different possibilities. >> Yet, if she has a “real ability to chose”, that will determine the type of >> branch she can found herself in. If not, the singlet state cannot be >> rotationally invariant. The singlet state gives an infinity of superposition >> possibles. We forget this by assuming that ud is supposed to du, but u’d is >> superposed with d’u’ too. > > But Alice and the detector are not in a singlet state and when you combine > them in a product with the singlet state the result is no long rotationally > invariant.
The rotational invariance of the singlet state has not been broken, and in principle Alice can get back to it by quantum memory erasure, unless collapse. Bruno > > Brent > >> >> Bruno >> >> >> >> >> >> >>> 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 [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/everything-list. >>> For more options, visit https://groups.google.com/d/optout. > > -- > 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 https://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. -- 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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
