Europhysics Letters (EPL)

The ESR model: A proposal for a noncontextual and local Hilbert space extension of QM

Claudio Garola, Sandro Sozzo

Published Apr 1, 2009• 30 citations

Abstract

The extended semantic realism ( ESR ) model proposes a new theoretical perspective that embodies the mathematical formalism of standard (Hilbert space) quantum mechanics (QM) in a noncontextual framework, reinterpreting quantum probabilities as conditional instead of absolute . We provide here a Hilbert space representation of the generalized observables introduced by the ESR model. By using this representation, we supply a straightforward generalization of the projection postulate and justify it in the case of discrete generalized observables by introducing a reasonable physical assumption on the evolution of the compound system made up of the (microscopic) measured system and the (macroscopic) measuring apparatus.

DOI: 10.1209/0295-5075/86/20009

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