Five stepwise thought experiments organized against the background of the framework of complex Hilbert spaces, observables, and measurement developed in Chapters 1 to 3 of Akira Shimizu's New Edition: Foundations of Quantum Theory (2003). The starting point is the “identification wall” of classical measurement theory (Δ is not a resolution but a threshold of individuation), and the destination is the algebraic picture in which “physical quantities satisfying an uncertainty relation are different projections extracted from the same wave packet.” The five thought experiments traverse: (I) the identification wall in measurement, (II) the indistinguishability of the locus of fluctuation, (III) the wavelength/wavenumber representation of momentum and the uncertainty relation (in which Planck's constant disappears as a unit-conversion factor), (IV) quantum correlations as a composite wave packet (the spatial division of one area element), and (V) the algebra of observables as different projections of the same wave packet bounded by the Robertson inequality. The paper does not modify the mathematical predictions of standard quantum theory; it confines itself to offering a geometric interpretation of each concept. Verbatim records of the AI-dialogue trial-and-error process are publicly available in the ai-chat-logs-open repository on GitHub.
Noriaki Kihara (Tue,) studied this question.