Zitat:
I found a very simple way to present the basics: Instead of interpreting expectations as a concept meaningful only for frequent repetition under similar conditions, I interpret it for a single system in the following way, consistent with the practice of thermal statistical mechanics, with the Ehrenfest theorem in quantum mechanics, and with the obvious need to ascribe to particles created in the lab an approximate position even though it is not in a position eigenstate (which doesn't exist).
The basic thermal interpretation rule says:
Upon measuring a Hermitian operator A the measured result will be approximately ⟨A⟩ with an uncertainty at least of the order of σA. Compared to the Born rule (which follows in special cases), this completely changes the ontology: The interpretation applies now to a single system, has a good classical limit for macroscopic observables, and obviates the quantum-classical Heisenberg cut. Thus the main problems in the interpretation of quantum mechanics are neatly resolved without the need to introduce a more fundamental classical description.
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Zitiert von
https://www.physicsoverflow.org/2461...ntum-mechanics
Damit wird doch klar, dass Neumaier das System an sich gar nicht betrachtet.