Phys. Rev. A 54, 3808–3812 (1996)Change and uncertainty in quantum systemsReceived 6 December 1995; published in the issue dated November 1996 A simple inequality shows that any change in the expectation value of an observable quantity must be associated with some degree of uncertainty. This inequality is often more restrictive than the Heisenberg uncertainty principle. © 1996 The American Physical Society. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.54.3808
DOI:
10.1103/PhysRevA.54.3808
PACS:
03.65.Bz
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