A quantum state can be understood in a loose sense as a map that assigns a
value to every observable. Formalizing this characterization of states in terms
of generalized probability distributions on the set of effects, we obtain a
simple proof of the result, analogous to Gleason's theorem, that any quantum
state is given by a density operator. As a corollary we obtain a von
Neumann-type argument against non-contextual hidden variables. It follows that
on an individual interpretation of quantum mechanics, the values of effects are
appropriately understood as propensities.
%0 Generic
%1 citeulike:478877
%A Busch, P.
%D 2003
%K generalized gleason observables quantum states
%T Quantum states and generalized observables: a simple proof of Gleason's theorem
%U http://arxiv.org/abs/quant-ph/9909073
%X A quantum state can be understood in a loose sense as a map that assigns a
value to every observable. Formalizing this characterization of states in terms
of generalized probability distributions on the set of effects, we obtain a
simple proof of the result, analogous to Gleason's theorem, that any quantum
state is given by a density operator. As a corollary we obtain a von
Neumann-type argument against non-contextual hidden variables. It follows that
on an individual interpretation of quantum mechanics, the values of effects are
appropriately understood as propensities.
@misc{citeulike:478877,
abstract = {A quantum state can be understood in a loose sense as a map that assigns a
value to every observable. Formalizing this characterization of states in terms
of generalized probability distributions on the set of effects, we obtain a
simple proof of the result, analogous to Gleason's theorem, that any quantum
state is given by a density operator. As a corollary we obtain a von
Neumann-type argument against non-contextual hidden variables. It follows that
on an individual interpretation of quantum mechanics, the values of effects are
appropriately understood as propensities.},
added-at = {2007-08-18T13:22:24.000+0200},
author = {Busch, P.},
biburl = {https://www.bibsonomy.org/bibtex/2493991e2203f85f26701d157c68a6917/a_olympia},
citeulike-article-id = {478877},
description = {citeulike},
eprint = {quant-ph/9909073},
interhash = {0c49dfcc0c89feef1dc27e6a91b911aa},
intrahash = {493991e2203f85f26701d157c68a6917},
keywords = {generalized gleason observables quantum states},
month = May,
priority = {2},
timestamp = {2007-08-18T13:22:36.000+0200},
title = {Quantum states and generalized observables: a simple proof of Gleason's theorem},
url = {http://arxiv.org/abs/quant-ph/9909073},
year = 2003
}