On Saturday, April 21, 2018 at 9:07:37 PM UTC, smitra wrote: > > On 21-04-2018 21:44, [email protected] <javascript:> wrote: > > On Saturday, April 21, 2018 at 3:12:48 PM UTC-4, smitra wrote: > > > >> On 20-04-2018 02:44, Brent Meeker wrote: > >>> On 4/19/2018 5:29 PM, smitra wrote: > >>>> One can a priori rule out any non-local effects using the fact > >> that > >>>> the dynamics as described by the Schrödinger equation is local. > >> So, in > >>>> any theory where there is no collapse and everything follows from > >> only > >>>> the Schrödinger equation, there cannot be non-local effects > >>> > >>> The wave-function exists in configuration space so a point in it > >>> already refers to multiple points in 3space. > >>> > >>> Brent > >> > >> Yes, but that doesn't yield any non-local effects. > >> > >> Saibal > > > > Why would you think it would, or should? Even the wf for the singlet > > system doesn't do that on its face. It's the Bell statistics that > > establish non locality. AG > > > What the Bell statistics prove is that any hidden variable theory that > would explain why in an experiment we obtain one result rather than one > of the other possible results, would necessarily have to be a non-local > theory.
But wouldn't a non local theory also have the detraction of implying instantaneous action at a distance? AG This means that if we reject non-local theories, we have to > reject any hidden variable theory. > > While one considers the special case of entangled particles to get this > result, the conclusion is, of course, valid in general: If there were a > hidden variable theory underlying QM, it would have to fully reproduce > QM and one can then show using the special case of entangled particles > that the actual dynamics of the hidden variable theory must be > non-local. > > But as long as we stay away from any hypothetical hidden variable theory > (there isn't a shred of evidence for such theories) any non-locality > associated with such theories is totally irrelevant. > > Saibal > > > > -- > > 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] <javascript:>. > > To post to this group, send email to > > [email protected] <javascript:>. > > Visit this group at https://groups.google.com/group/everything-list > > [1]. > > For more options, visit https://groups.google.com/d/optout [2]. > > > > > > Links: > > ------ > > [1] https://groups.google.com/group/everything-list > > [2] 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.
