On 2/4/2014 2:25 AM, Bruno Marchal wrote:
The MWI is deterministic, however, and hence has hidden variables.
But not "hidden variable" in the EPR sense. In the MWI, there are hidden universes, they
are not variable, but terms in the universal wave, and we just don't know which terms
apply to us. If it was hidden variable in the EPR sense, then by Bell, they would be
non-local, and you would conclude falsely (like Clark) that the MWI has to be non local
(which I doubt very much)
But is it non-local? The FPI is based on find yourself in a particular universe (where
the measurement was "up" say) so that's an indicial variable labeling that universe. Now
you may say that indicial label really only applies to the forward lightcone relative to
the measurement. But if is one of an EPR pair, it must also carry a variable value that
tells it it is correlated with the the other particle of the EPR pair, so that in the
overlap of their forward lightcones the statistis will violate Bell's inequality.
Otherwise you could get the same statistics using non-entangled pairs at the two measuring
devices.
Brent
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