Einstein, Incompleteness, and the Epistemic View of Quantum States

@article{Harrigan2007EinsteinIA,
title={Einstein, Incompleteness, and the Epistemic View of Quantum States},
author={N. Harrigan and R. Spekkens},
journal={Foundations of Physics},
year={2007},
volume={40},
pages={125-157}
}

Does the quantum state represent reality or our knowledge of reality? In making this distinction precise, we are led to a novel classification of hidden variable models of quantum theory. We show that representatives of each class can be found among existing constructions for two-dimensional Hilbert spaces. Our approach also provides a fruitful new perspective on arguments for the nonlocality and incompleteness of quantum theory. Specifically, we show that for models wherein the quantum state… Expand