On 10/05/2016 10:31 pm, Bruno Marchal wrote:
On 10 May 2016, at 09:00, 'scerir' via Everything List wrote:
Bruno (I suppose) wrote:
But in the MWI, some work needs to be done (at least) to
convince me. I don't even find a paper on the subject, only
paper which shows that MWI is local (some more rigorous than
other). Do you have a reference of a paper showing that Bell's
inequality violation entails non locality in the MWI? I would
like to take a look on it, if it exists.
### W. Myrvold wrote something here
http://philsci-archive.pitt.edu/11654/ (see ch. 0.8)
Thanks Scerir, but yet again, this paper get the same conclusion as
mine (and most people here). With the MWI, non-locality does not imply
action-at-a distance. (d'Espagnat would call it non-separability).
There seems to be a degree of terminological confusion surrounding this
topic. Non-locality, for me, means that the measurement at A influences
the measurement at B. But this influence is not manipulable, so it
cannot be used for signalling. In other words, quantum mechanics obeys
the standard no-signalling theorems (and is thus consistent with special
relativity), while being non-local in the sense that the measurements at
A and B are not independent. Call this non-separability if you will --
the terminology should not make any difference, provided we are clear as
to what the terms mean.
Bruce
What I look for would be a paper which would show that in the MWI
there are action-at-a-distance, like Bruce and John C claim.
I might comment later, as I am late in my scheduling, but will just
notice that Gisin's paper (mentionned by Brent) use the
non-compatibilist theory of free-will, which makes no-sense to a
mechanist. I think Brent concluded similarly.
Bruno
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