Causal Classical Physics in Time Symmetric Quantum Mechanics. (arXiv:1802.02090v1 [quant-ph])

The letter submitted is an executive summary of our previous paper. To solve
the Einstein Podolsky Rosen 'paradox' the two boundary quantum mechanics is
taken as self consistent interpretation of quantum dynamics. The difficulty
with this interpretation is to reconcile it with classical physics. To avoid
macroscopic backward causation two 'corresponding transition rules' are
formulated which specify needed properties of macroscopic observations and
manipulations. The apparent classical causal decision tree requires to
understand the classically unchosen options. They are taken to occur with an
'incomplete knowledge' of the boundary states typically in macroscopic
considerations. The precise boundary conditions with given phases then select
the actual measured path and this selection is mistaken to happen at the time
of measurement. The apparent time direction of the decision tree originates in
an assumed relative proximity to the initial state. Only the far away final
state allows for classically distinct options to be selected from.
Cosmologically the picture could correspond to a big bang initial and a hugely
extended final state scenario. It is speculated that it might also hold for a
big bang/big crunch world. If this would be the case the Born probability
postulate could find a natural explanation if we coexist in the expanding and
the correlated CPT conjugate contracting world.

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