On 2/27/2015 1:53 AM, Bruno Marchal wrote:
Only because it assumes the Born rule applies to give a probability interpretation to
the density matrix. But Everettista's either ignore the need for the Born rule or they
suppose it can be derived from the SWE (although all attempts have fallen short).
Gleason's theorem (or simpler: Destouches-Février, or Finkelstein (simplified in
Selesnick's book) + the comp FPI + the SWE explains the Born rule.
I don't think so. FPI doesn't imply a measure; indeterminancy=/=probability. Gleason't
theorem only shows that a measure must be the Born rule in order to be a consistent
probability measure. But it's not so clear how FPI implies some measure satisfying
Kolmogorov's axioms.
Brent
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