Measurement error and the AlbertLoewer problem
Abstract
Modal interpretations of QM have the welcome consequence that unitarily evolved postmeasurement states which superpose eigenstates of the anticipated pointer observable can represent devices registering determinate measurement outcomes. Albert and Loewer have claimed that modal interpretations cannot account for the outcomes of “errorprone” measurements. But Albert, Loewer, and their commentators have not always appreciated the relation of measurement error to the AlbertLoewer problem. I argue that measurement error is neither necessary nor sufficient to generate the AlbertLoewer problem, and use the ArakiYanase theorem to show that measurements of a large class of observables, if they are errorfree, are beset by the AlbertLoewer problem.
 Publication:

Foundations of Physics Letters
 Pub Date:
 August 1995
 DOI:
 10.1007/BF02187813
 Bibcode:
 1995FoPhL...8..327R
 Keywords:

 modal interpretations;
 measurement problem;
 Albert;
 imperfect measurement