Foundations of Physics

, Volume 30, Issue 9, pp 1473–1480 | Cite as

Why the Disjunction in Quantum Logic is Not Classical

  • Diederik Aerts
  • Ellie D'Hondt
  • Liane Gabora


In this paper, the quantum logical “or” is analyzed from a physical perspective. We show that it is the existence of EPR-like correlation states for the quantum mechanical entity under consideration that make it nonequivalent to the classical situation. Specifically, the presence of potentiality in these correlation states gives rise to the quantum deviation from the classical logical “or.” We show how this arises not only in the microworld, but also in macroscopic situations where EPR-like correlation states are present. We investigate how application of this analysis to concepts could alleviate some well known problems in cognitive science.


Cognitive Science Correlation State Quantum Logic Physical Perspective Classical Situation 
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Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • Diederik Aerts
    • 1
  • Ellie D'Hondt
    • 2
  • Liane Gabora
    • 3
  1. 1.Center Leo ApostelBrussels Free UniversityBrusselsBelgium;
  2. 2.Center Leo ApostelBrussels Free UniversityBrusselsBelgium;
  3. 3.Center Leo ApostelBrussels Free UniversityBrusselsBelgium;

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