Bruno writes: Alice * (up + down) = Alice * up + Alice * down. If Alice look, as many times as she want at the up/down state of the particle, she will find up (and always up) *and* down and always down. The reason is that once she find up, Alice becomes Alice-up, and that state does no more factor out the particle state (unless memory erasure).
--------------- The paradox of the "Renninger type measurement" is that it causes some changes in the state of the system “WITHOUT INTERACTION.” Renninger discussed a “NEGATIVE RESULT” experiment: a situation in which the detector DOES NOT DETECT ANYTHING. But in spite of the fact that nothing happened to the detector, there is a change in the measured system (split, collapse, reduction, or whatever). He considered a spherical wave of a photon after it extended beyond the radius at which a scintillation detector was located in part of the solid angle. The state of the detector remained unchanged but, nevertheless, the wave- function of the photon is modified. See ch. 4.1 here http://mist.npl.washington.edu/npl/int_rep/tiqm/TI_40.html and also http://mist.npl.washington.edu/npl/int_rep/tiqm/TI_fig_06.html How is it possible to explain this situation? In MWI terms? In ManyMinds terms? Third person pov? First person pov? I'm asking that because there is a strange mixture of (physical) reality and (subjective) information here. -- 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.
