Posner Molecule Ca₉(PO₄)₆: ³¹P Nuclear Spin Qubits at Physiological Temperature — E8 Intelligence Research

FINDING: Posner molecule Ca₉(PO₄)₆ identified as candidate biological qubit — 9 calcium ions + 6 phosphate tetrahedra form symmetric cluster with phosphorus-31 nuclear spins (spin-½) as protected qubits; dynamical ensemble breaks symmetry, enabling quantum information processing at physiological temperature MATH: Ca₉(PO₄)₆ stoichiometry (9:6 = 3:2 ratio); ³¹P nuclear spin-½ qubits (6 per molecule); J-coupling Hamiltonian H = Σ Jᵢⱼ Iᵢ·Iⱼ; symmetry group S₆ or D₃h for static Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com