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arXiv · 2506.02227

Can the Infamous Boundary Be Found in Macromolecules? Also, von Neumann vs. Schroedinger ensembles, and `Hund's Paradox' in quantum chemistry

W. David Wick
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Abstract

John Bell coined the phrase ``Infamous Boundary" for the point where classical physics splits off from quantum physics. Many authors, including the present one, have advanced theories with the intention of defining and locating this ``shifty split"; most propose that it lies somewhere on the scale of apparatus. But what if it resides at the level of macromolecules? I show here that this question is intimately connected to the choice of thermal ensembles and to the so-called `Hund's Paradox' in quantum chemistry. I propose an experimental set-up that could in principle reveal the IB lurking in asymmetric macromolecules.

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W. David Wick. 2025-06-02. Can the Infamous Boundary Be Found in Macromolecules? Also, von Neumann vs. Schroedinger ensembles, and `Hund's Paradox' in quantum chemistry. https://arxiv.org/abs/2506.02227

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