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Quantum decoherence is the *irreversible loss of ordering of the phase angles* between the components of a system in a quantum superposition resulting in classical or probabilistically additive behavior, thereby suppressing interference of wavefunction components.

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Is there a tutorial explanation as to how decoherence transforms a wavefunction (with a superposition of possible observable values) into a set of well-defined specific "classical" observable values … without the concept of the wavefunction undergoing "collapse"? I mean an explanation which is less technical than that decoherence is the decay or rapid vanishing of the off-diagonal elements of …
asked Jan 31 '11 by Nigel Seel