Phys. Rev. Lett. 54, 5–7 (1985)Curious New Statistical Prediction of Quantum MechanicsReceived 3 October 1984; published in the issue dated 7 January 1985 Whether quantum mechanical systems, within the interval between two measurements, can be assigned definite, simultaneous values of noncommuting observables has been the subject of a very old dispute. A certain widely held assumption about such systems has been crucial to that dispute. That assumption turns out to be wrong: A previously unknown prediction of quantum mechanics, which fails to satisfy that assumption, is described here, and the consequences of that failure are considered. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.54.5
DOI:
10.1103/PhysRevLett.54.5
PACS:
03.65.Bz
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