Incompatible and contradictory retrodictions in the history approach to quantum mechanics
Abstract
We illustrate two simple spin examples which show that in the consistent histories approach to quantum mechanics one can retrodict with certainty incompatible or contradictory propositions corresponding to nonorthogonal or, respectively, orthogonal projections. V.2 vs. V1: The example previously quoted as "d'Espagnat's example" is now properly quoted as "Griffiths' example". A reference to a previous work by Aharonov and Vaidman is added.
 Publication:

arXiv eprints
 Pub Date:
 October 1997
 DOI:
 10.48550/arXiv.quantph/9710003
 arXiv:
 arXiv:quantph/9710003
 Bibcode:
 1997quant.ph.10003P
 Keywords:

 Quantum Physics
 EPrint:
 4 pages, RevTeX, 3 diagrams processed by TeX