EPR-Bell Tests with Unsharp Observables and Relativistic Quantum Measurement

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Department/unit(s)

Publication details

Title of host publicationNon-locality and Modality
DatePublished - 2002
Pages175-193
Number of pages19
Place of PublicationDordrecht
EditorsJeremy Butterfield, Tomasz Placek
Volume64
Original languageEnglish

Abstract

In this contribution I will review the analysis of the Einstein-Podolsky-Rosen argument, Bell's inequalities and of associated experiments for spins in terms of positive operator valued measures. Specifically, I will explore the relation between the Clauser-Horne-Shimony-Holt inequality and a fundamental classicality property of observables - their coexistence. A derivation of Bell's inequalities for unsharp spins will be given which follows a reconstruction by Mittelstaedt and Stachow of the original EPR argument. In this context we discuss the need for a consistent relativistic description of localised measurements, carried out in spacelike separated regions of spacetime on spatially extended, entangled systems.

    Research areas

  • Mathematical Physics

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