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arxiv: 1506.04939 · v2 · pith:NFBWQ2K3new · submitted 2015-06-16 · 🪐 quant-ph

Objective Reality of Pointer States

classification 🪐 quant-ph
keywords statesexpectationobjectiveobservablepointervaluedecoherencedone
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It is shown that the nature of quantum states that emerge from decoherence is such that one can {\em measure} the expectation value of any observable of the system in a single measurement. This can be done even when such pointer states are a priori unknown. The possibility of measuring the expectation value of any observable, without any prior knowledge of the state, points to the objective existence of such states.

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