On 12/12/2017 11:54 am, smitra wrote:
On 11-12-2017 23:24, Bruce Kellett wrote:
As I have said before, the biggest challenge for quantum physics is to
explain the emergence of the classical world from the quantum
substrate, so that classical calculations actually get the correct
answers in those classical situations. If you do not believe that
these classical calculations are correct, then I advise you not ever
to drive your car on a busy road.....
There is no way a Hilbert space can become a classical configuration
space. If one sticks to a falsified theory (in the domain where you
can hide the shortcomings under the carpet) and cast doubt on a theory
that has withstood rigorous experimental tests, then it's likely that
attitude that's the cause of most problems.
I think you have to take account of decoherence, and the reduction of
the density matrix to diagonal form FAPP. The diagonal density matrix
corresponds to normal classical probabilities and disjoint Everettian
worlds. After all, classical physics has withstood the most rigorous
experimental tests in its proper domain. Quantum theory does nothing to
undermine these results.
Bruce
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