On Monday, October 14, 2019 at 1:20:39 PM UTC-5, Brent wrote: > > Part of the dislike of the MWI is that its proponents assume a purity that > is not an evident virtue of the intepretation. For example, interpreting > the squared amplitudes as probabilities seems to be assumed, along with the > existence of the preferred basis in which the amplitudes are defined. > Together these are almost the same as CI. If you ask "probabilities of > what?" in MWI the answer can't be probability of existing because MWI has > committed to all solutions, however improbable, existing. So it becomes > probability of finding yourself in a particular world...which depends on a > theory of consciousness and seems to regress to von Neumann and Wigner. > > Zurek's envariance attempts to answer these questions and provide a > justification for preferred bases and what probability refers to. But > notice that to the extent he succeeds he is justifying taking a simple > probabilistic view and saying one of those preferred states happens and the > others don't. > > Brent > > > In the single-particle double-slit experiment*, an observer could see a dot appear anywhere on a screen where path interference does not reduce the probability to zero. So with the literal many-world-branching theory, how many different worlds are produced, each on with its own observer seeing a dot on the screen?
* https://sciencedemonstrations.fas.harvard.edu/presentations/single-photon-interference In this demonstration we perform the double-slit interference experiment with extremely dim light and show that even when the light intensity is reduced down to several photons/sec, the audience can see the familiar Young's double-slit interference pattern build up over a period of time. This addresses the question of how can single photons interfere with photons that have already gone through the apparatus in the past, or with those that will go through in the future, or with themselves. @philipthrift -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/8689b657-89e9-489f-8431-256786384c1c%40googlegroups.com.
