Quote. " With our ideal realization of the delayed-choice entanglement swapping gedanken experiment, we have demonstrated a generalization of Wheeler’s “delayed-choice” tests, going from the wave-particle duality of a single particle to the entanglement-separability duality of two particles. Whether these two particles are entangled or separable has been decided after they have been measured. If one views the quantum state as a real physical object, one could get the seemingly paradoxical situation that future actions appear as having an influence on past and already irrevocably recorded events. However, there is never a paradox if the quantum state is viewed as to be no more than a “catalogue of our knowledge”. Then the state is a probability list for all possible measurement outcomes, the relative temporal order of the three observer’s events is irrelevant and no physical interactions whatsoever between these events, especially into the past, are necessary to explain the delayed-choice entanglement swapping. What, however, is important is to relate the lists of Alice, Bob and Victor’s measurement results. On the basis of Victor’s measurement settings and results, Alice and Bob can group their earlier and locally totally random results into subsets which each have a different meaning and interpretation. This formation of subsets is independent of the temporal order of the measurements. According to Wheeler, Bohr said: 'No elementary phenomenon is a phenomenon until it is a registered phenomenon.' We would like to extend this by saying: 'Some registered phenomena do not have a meaning unless they are put in relationship with other registered phenomena.' "
-- Zeilinger et al. https://arxiv.org/abs/1206.6578 It seems to me that ontic interpretations of quantum states, *if* future measurements appear as having an influence on past and already irrevocably recorded events, are untenable. Now the MWI is, for sure, an 'ontic' interpretation (an ontic theory if you prefer). How can we explain, within MWI, in 'ontic' terms, that future actions appear as having an influence on past and already irrevocably recorded events? Is it possible that in MWI is both a real physical object and a “catalogue of our knowledge”? -- 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.
