Tuesday, March 15, 2016

quantum mechanics - Is the "consistent histories" interpretation of QM a "many worlds interpretation" in disguise?


The so called consistent histories interpretation is claimed to be a correction of the Copenhagen Interpretation. One of its aim, as much as I can see is to show that observers don't have any special role and a history is represented as a sequence of projection operators in the Heisenberg picture. It has been convincingly shown that due to environmental decoherence the density matrix will be almost diagonalized within a short time (expressed in terms of a certain basis of interest). It will smell just like a "collapse" of the wave function.


However, if we want to see the whole picture, we see that superposition still exists in the entangled whole. My question is whether this interpretation is actually a "many worlds interpretation" in disguise? If not, then why not?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

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