Null–Field Larmor Precession and the Geometric Origin of the Anomalous Magnetic Moment A Smoking–Gun Test of the Methane Metauniverse

This article proposes a geometric origin of the anomalous magnetic moment g-2 within the Methane Metauniverse (MMU) framework. In contrast to the standard quantum electrodynamics interpretation, where g-2 is treated as a radiative loop correction, the MMU identifies the anomaly as a necessary phase closure effect of an intrinsic torsional spin mode of spacetime. In the MMU, spacetime is modeled as a discrete elastic lattice of dual tetrahedral cells with internal degrees of freedom associated with electric, torsional, and volumetric deformations. Spin is interpreted as a real torsional eigenmode, not as an abstract operator. The magnetic g factor arises geometrically from the ratio of torsional and orbital frequencies, while deviations from the Dirac value g equals 2 emerge when exact phase closure of the internal motion requires a correction. A central prediction of this work is the existence of a Larmor type spin precession frequency that persists even in the absence of an external magnetic field. This null field precession is shown to depend on isotopic mass and gravitational compression through changes of the internal geometric length scale. Such effects are strictly forbidden in standard quantum electrodynamics. The article proposes a clean and falsifiable experimental test based on isotopically differential, null field spin measurements. A positive result would provide direct evidence for geometric spin torsion and phase closure dynamics, while a null result would falsify the MMU prediction. The work is intended as an openly auditable, theory driven contribution to precision spin physics and fundamental spacetime modeling.