Philosophies (Mar 2024)

Leibniz’s Principle, (Non-)Entanglement, and Pauli Exclusion

  • Cord Friebe

DOI
https://doi.org/10.3390/philosophies9020045
Journal volume & issue
Vol. 9, no. 2
p. 45

Abstract

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Both bosons and fermions satisfy a strong version of Leibniz’s Principle of the Identity of Indiscernibles (PII), and so are ontologically on a par with respect to the PII. This holds for non-entangled, non-product states and for physically entangled states—as it has been established in previous work. In this paper, the Leibniz strategy is completed by including the (bosonic) symmetric product states. A new understanding of Pauli’s Exclusion Principle is provided, which distinguishes bosons from fermions in a peculiar ontological way. Finally, the program as a whole is defended against substantial objections.

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