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On the Classification Between ψ-Ontic and ψ-Epistemic Ontological Models

Oldofredi, Andrea ; López, Cristian

Foundations of physics, 2020-11, Vol.50 (11), p.1315-1345 [Periódico revisado por pares]

New York: Springer US

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  • Título:
    On the Classification Between ψ-Ontic and ψ-Epistemic Ontological Models
  • Autor: Oldofredi, Andrea ; López, Cristian
  • Assuntos: Classical and Quantum Gravitation ; Classical Mechanics ; History and Philosophical Foundations of Physics ; Philosophy of Science ; Physics ; Physics and Astronomy ; Quantum Physics ; Relativity Theory ; Statistical Physics and Dynamical Systems
  • É parte de: Foundations of physics, 2020-11, Vol.50 (11), p.1315-1345
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: Harrigan and Spekkens (Found Phys 40:125–157, 2010) provided a categorization of quantum ontological models classifying them as ψ -ontic or ψ -epistemic if the quantum state ψ describes respectively either a physical reality or mere observers’ knowledge. Moreover, they claimed that Einstein—who was a supporter of the statistical interpretation of quantum mechanics—endorsed an epistemic view of ψ . In this essay we critically assess such a classification and some of its consequences by proposing a twofold argumentation. Firstly, we show that Harrigan and Spekkens’ categorization implicitly assumes that a complete description of a quantum system (its ontic state, λ ) only concerns single , individual systems instantiating absolute , intrinsic properties. Secondly, we argue that such assumptions conflict with some current interpretations of quantum mechanics, which employ different ontic states as a complete description of quantum systems. In particular, we will show that, since in the statistical interpretation ontic states describe ensembles rather than individuals, such a view cannot be considered ψ -epistemic. As a consequence, the authors misinterpreted Einstein’s view concerning the nature of the quantum state. Next, we will focus on relational quantum mechanics and perspectival quantum mechanics , which in virtue of their relational and perspectival metaphysics employ ontic states λ dealing with relational properties. We conclude that Harrigan and Spekkens’ categorization is too narrow and entails an inadequate classification of the mentioned interpretations of quantum theory. Hence, any satisfactory classification of quantum ontological models ought to take into account the variations of λ across different interpretations of quantum mechanics.
  • Editor: New York: Springer US
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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