Nature of Quantum States
- 1 March 1968
- journal article
- Published by American Association of Physics Teachers (AAPT) in American Journal of Physics
- Vol. 36 (3) , 211-226
- https://doi.org/10.1119/1.1974484
Abstract
This paper carefully explores the relations among the statistical ensembles, systems, and states (pure and mixed) of quantum theory. By systematically contrasting the classical and quantal realizations of a general paradigm for a probabilistic physics, important distinctions are exposed both in statics and dynamics. Included are observations concerning the intrinsic ambiguity of the quantum-state concept and the peculiarly quantum property of dynamic indivisibility. It is concluded that the conceptual gulf between classical states and quantum “states” is wider than commonly assumed.Keywords
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