Foundations of Physics

, Volume 39, Issue 7, pp 712–730

On the Sharpness and Bias of Quantum Effects

Authors

    • Department of MathematicsUniversity of York
Article

DOI: 10.1007/s10701-009-9287-8

Cite this article as:
Busch, P. Found Phys (2009) 39: 712. doi:10.1007/s10701-009-9287-8

Abstract

The question of quantifying the sharpness (or unsharpness) of a quantum mechanical effect is investigated. Apart from sharpness, another property, bias, is found to be relevant for the joint measurability or coexistence of two effects. Measures of bias will be defined and examples given.

Keywords

Quantum measurementJoint observableCoexistenceEffectUnsharp observableBias

Copyright information

© Springer Science+Business Media, LLC 2009