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  1. Generic Incomparability of Infinite-Dimensional Entangled States.Christian Wüthrich, Rob Clifton & Brian Hepburn - 2002 - Physics Letters A 303:121-124.
    In support of a recent conjecture by Nielsen (1999), we prove that the phenomena of ‘incomparable entanglement’— whereby, neither member of a pair of pure entangled states can be transformed into the other via local operations and classical communication (LOCC)—is a generic feature when the states at issue live in an infinite-dimensional Hilbert space.  2002 Elsevier Science B.V. All rights reserved.
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  2. Kochen-Specker Epsilon-Obstruction for Position and Momentum.Wayne C. Myrvold - 2002 - Physics Letters A 299:8-14.
    The Bell–Kochen–Specker theorem shows that, in any Hilbert space of dimension of at least 3, it is impossible to assign noncontextual definite values to all observables in such a way that the quantum-mechanical predictions are reproduced. This leaves open the issue of what subsets of observables may be assigned definite values. Clifton has shown that, for a system of at least two continuous degrees of freedom, it is not possible to assign simultaneous noncontextual values to two coordinates and their conjugate (...)
     
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    A Local Hidden Variable Theory for the GHZ Experiment.Laszlo E. Szabo & Arthur Fine - 2002 - Physics Letters A 295:229–240.
    A recent analysis by de Barros and Suppes of experimentally realizable GHZ correlations supports the conclusion that these correlations cannot be explained by introducing local hidden variables. We show, nevertheless, that their analysis does not exclude local hidden variable models in which the inefficiency in the experiment is an effect not only of random errors in the detector equipment, but is also the manifestation of a pre-set, hidden property of the particles ("prism models"). Indeed, we present an explicit prism model (...)
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