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The Objectivity and Invariance of Quantum Predictions
Gordon N. Fleming
PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association
Vol. 1992, Volume One: Contributed Papers (1992), pp. 104-113
Stable URL: http://www.jstor.org/stable/192747
Page Count: 10
You can always find the topics here!Topics: Hyperplanes, Particle spin, State vectors, Quantum field theory, Spacetime, Physics, Probability distributions, Refutation, Perceptual localization, Relativistic particles
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A recent argument by Pitowsky (1991), leading to the relativity (as opposed to objectivity) of quantum predictions, is refuted. The refutation proceeds by taking into account the hyperplane dependence of the quantum predictions emerging from the three mutually space-like separated measurements, performed on an entangled state of three spin 1/2 particles, that Pitowsky considers. From this hyperplane dependence one finds that the logical step of conjoining the predictions from distinct measurements is ineffective since those predictions apply either, locally, to sets of points with an intersection that is inaccessible to the particles, or globally, to sets of hyperplanes with an intersection that is empty. We also see how explicit reference to the hyperplane dependence of the predictions gives covariant expression to the invariant content of the predictions, which are thereby shown to be objective.
PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association © 1992 The University of Chicago Press