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Quantum theory and questions of reality and completeness

Abstract

We discuss how the description of a two-particle spin-1/2 system prepared in a singlet state, a product state of definite total spin projection and a specified mixture relates to the EPR conceptions of relativity, locality and completeness and to Jarret's interpretations and representations of these concepts by probability statements. The importance of the state-preparation procedures and their relevance in this context is emphasized. It is concluded that the making of a priori claims on reality and completeness is a too narrow scheme to describe quantal phenomena.

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Andås, H.E., Gjøtterud, O.K. Quantum theory and questions of reality and completeness. Found Phys Lett 6, 55–74 (1993). https://doi.org/10.1007/BF00683109

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Key words

  • quantum theory
  • EPR
  • reality
  • completeness
  • locality