Ontological Models for Quantum Mechanics and the Kochen-Specker theorem

Details Ontological Models for Quantum Mechanics and the Kochen-Specker theorem Ontological Models for Quantum Mechanics and the Kochen-Specker theorem

2006-08-15

arxiv.org/abs/quant-ph/0608120v1

Physics

Quantum Physics

These theories are not quantum mechanics. But they should be

Scientific paper

Certain concrete "ontological models" for quantum mechanics (models in which measurement outcomes are deterministic and quantum states are equivalent to classical probability distributions over some space of `hidden variables') are examined. The models are generalizations of Kochen and Specker's such model for a single 2-dimensional system - in particular a model for a three dimensional quantum system is considered in detail. Unfortunately, it appears the models do not quite reproduce the quantum mechanical statistics. They do, however, come close to doing so, and in as much as they simply involve probability distributions over the complex projective space they do reproduce pretty much everything else in quantum mechanics. The Kochen-Specker theorem is examined in the light of these models, and the rather mild nature of the manifested contextuality is discussed.

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