Asymmetric Posner Molecules Undermine Long-Lived Quantum Coherence Claims — E8 Intelligence Research

Andrew Stewart Caldin

Published Sep 16, 2026• 0 citations

Abstract

FINDING: Posner molecule (Ca₉(PO₄)₆) quantum coherence evidence is contested; the dynamical ensemble is explicitly *not* symmetric, undermining naive claims of long-lived nuclear spin coherence for biological quantum processing. | MATH: Stoichiometry: Ca₉(PO₄)₆ → 9 Ca²⁺, 6 PO₄³⁻; nuclear spin-1/2 on ³¹P (6 P atoms) and spin-7/2 on ⁴³Ca (if isotopically enriched). The paper (arXiv:2108.08822v2) shows the molecular symmetry group is *not* the full octahedral or tetrahedral point group — the dynamical ensemble breaks symmetry, reducing the number of equivalent ³¹P sites. No golden-ratio or base-60 constants appear; the key structural constant is the Ca–P–O bond geometry, which is distorted from ideal tetrahedral (PO₄) symmetry. | CONNECTION: The claimed quantum processor relies on nuclear spin states — but the symmetry breaking means the Hilbert space dimension is not the naive 2⁶ = 64 for ³¹P spins; it is reduced by inequivalent sites. This directly contradicts the assumption of a highly Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

DOI: 10.5281/zenodo.22786736

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