Physics – Quantum Physics
Scientific paper
2001-09-28
Physics
Quantum Physics
22 pages, LaTeX2e, slightly revised
Scientific paper
Quantum "states" are objective probability measures. Because their dependence on a time is not the time dependence of an evolving state, they are neither states of Nature nor "states of knowledge." There is no such thing as an evolving state. This disposes of the problem posed by the apparent existence of two modes of evolution. What essentially stands in the way of a consistent ontological interpretation of the quantum theory is our habit of projecting into the quantum world the detached, intrinsically differentiated spatiotemporal background of classical physics, for this is what entails the existence of an evolving state. An objective probability measure is the formal expression of an objective indefiniteness, such as the positional indefiniteness that contributes to "fluff out" matter. An objective indefiniteness entails that the values of certain observables are extrinsic (possessed because they are indicated) rather than intrinsic (indicated because they are possessed). This dependence on value-indicating facts is not a dependence on anything external to the quantum world. The latter constitutes a free-standing reality that owes nothing to observers, "information," or our interventions into "the course of Nature."
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