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We can look at the quantum non-locality

from two *very* different points of view.

*>From the *abstract* point of view many authors have
*

pointed out that the quantum non-locality (EPR problem, etc.)

does not exist or that it is not a weird phenomenon.

Accardi i.e. shows that quantum non-locality, EPR, Bell's

conditions are easily intelligible, in classical terms.

It is well known his classical, Bell-type, real experiment.

quant-ph/0007019, quant-ph/0007005.

Adami and Cerf i.e. have shown that quantum measurement

and non-locality are easily intelligible by means of

information theory. Heisenberg and J.Rothstein (and

now Zeilinger) had the same idea.

quant-ph/9806047, quant-ph/9605039, quant-ph/9605002,

quant-ph/9611032.

Rovelli i.e. suggested that the notion of observer-independent state

was non correct andI reformulated the problem of the interpretation

of quantum mechanics in terms of information theory.

All systems are assumed to be equivalent, there is no observer-observed

distinction, and the theory describes only the information

that systems have about each other.

quant-ph/9609002.

The same thing did Mermin, in his Ithaca Interpretation.

quant-ph/9807055, quant-ph/9801057, quant-ph/9711052,

quant-ph/9609013.

The M.W.I. is useful too, as John Bell pointed out

(this interpretation was dead at that time!). But this

interpretation has lots of problems: no collapse means no

entropy?; solipsism or worse; inner or radical non-locality.

But from the *physical* point of view nobody (!)

is able to *explain* those quantum non-locality experiments

or those quantum non-separability experiments,

i.e. the identical behaviour of those entangled particles

inside those Franson-type interferometers,

or the weird quantum-eraser exp., or the ghost interference exp.,

etc. etc. etc.

http://arxiv.org/abs/quant-ph/9501016

http://arxiv.org/abs/quant-ph/9903047

http://arxiv.org/abs/quant-ph/9809025

http://arxiv.org/abs/quant-ph/9806043

http://arxiv.org/abs/quant-ph/0007009

http://arxiv.org/abs/quant-ph/9707030

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