Re: confused w/ decoherence

I am far from an expert, but have been studying the density matrix
formulas and c*-algebras for some time now. The problem becomes more
clear if you think in terms of conditional probability and
renormalization. The 1st measurments takes us from state A1 to state
A2, so the next measurements probabilities p(A3)=p(A2|A1)*p(A1) are
conditional upon all previous measurements. Good ole' measure/
probability theory applied to complex variables. I found the book
'Quantum Noise' by Gardiner and Zoller to be fairly useful but not
mathematical enough for my tastes.

--Stephen

.

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