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Right. The problem of interpretation arises when the qbit has value 0 with probability 75%, and value 1 with probability 25%. In what sense can the universe be
by millstone 7y ago
Right. The problem of interpretation arises when the qbit has value 0 with probability 75%, and value 1 with probability 25%. In what sense can the universe be said to have branched into two, yet the probabilities are not evenly divided? What can probability even mean if both branches are in some sense realized - is one branch 3x as "real" as the other?
- eigenspace 7y agoAgain, I’d say you’re misunderstanding the point. The branches aren’t a real thing in quantum mechanics. They’re just a particular way of looking at the wave function of the universe. In the evolution of the wave function, it sometimes will ‘split’ into two parts that are essentially independent of each other and may have different amplitudes associated with them. These amplitudes may be shown to correspond to the (square root of the) probability of finding yourself in one branch or another. However, if you knew about the entire wavefunction as an outside godly observer to the universe might, then there’d be no point in speaking of ‘branches’.