The discussion revolves around the concept of decoherence in quantum mechanics, particularly focusing on the nature of superposition in quantum systems and the implications of interactions among quanta. Participants explore the definitions and interpretations of decoherence, its relationship to wave function collapse, and the confusion stemming from various sources, including Wikipedia.
Participants exhibit disagreement regarding the definitions and implications of decoherence, with some clarifying misconceptions while others express confusion. The discussion does not reach a consensus on the interpretations of decoherence and its relationship to wave function collapse.
There are limitations in the discussion regarding the definitions of key terms and the assumptions underlying the interpretations of quantum mechanics. The relationship between decoherence and the perception of definite outcomes remains unresolved.
Demystifier said:First of all, reaching a definite state is NOT called decoherence.
A citation from http://en.wikipedia.org/wiki/Decoherence :Galteeth said:I have been confused by wikipedia.
Demystifier said:A citation from http://en.wikipedia.org/wiki/Decoherence :
"Decoherence does not generate actual wave function collapse. It only provides an explanation for the appearance of wavefunction collapse. ... Moreover, our observation tells us that this mixture looks like a proper quantum ensemble in a measurement situation, as we observe that measurements lead to the "realization" of precicely one state in the "ensemble". But within the framework of the interpretation of quantum mechanics, decoherence cannot explain this crucial step from an apparent mixture to the existence and/or perception of single outcomes."