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Against the Tyranny of ‘Pure States’ in Quantum Theory

Tijdschriftbijdrage - Tijdschriftartikel

We argue that the notion of pure sate within Standard Quantum Mechanics is presently applied within the specialized literature in relation to two mutually inconsistent definitions. While the first (operational purity) provides a basis-dependent definition which makes reference to the certain prediction of measurement outcomes, the latter (trace-invariant purity) provides a purely abstract invariant definition which lacks operational content. In this work we derive a theorem which exposes the serious inconsistencies existent within these two incompatible definitions of purity.
Tijdschrift: Foundations of Science
ISSN: 1233-1821
Issue: 1
Volume: 27
Pagina's: 27–41
Jaar van publicatie:2022
BOF-keylabel:ja
IOF-keylabel:ja
BOF-publication weight:1
Auteurs:International
Authors from:Higher Education
Toegankelijkheid:Open