Subatomic Origin and Geophysical Selection of Homochirality in Life: Formulating the Causal Chain from Weak Parity Violation to Geomagnetic Boundaries and Kinetic Monopoly via Replicator Dynamics

The 100 percent left-handed (L-form) uniformity of amino acids (homochirality), which forms the bedrock of terrestrial life, remains a long-standing unsolved problem in natural science: how did it evade thermodynamic cancellation from a racemic state where right- and left-handed forms are equally mixed (50:50)? The absolute starting point of all causality is formulated as an infinitesimal energy difference of 10^-14 eV induced by the parity symmetry violation in subatomic weak interactions, and a four-stage dynamic relay and kinetic selection mechanism directly linking this to macro-scale biological phenomena is completely established. The proposed architecture consists of the following causal chain: (1) Asymmetric photolysis driven by right-circularly polarized Lyman-alpha (Lyα) radiation from early massive star-forming regions and right-handed antineutrino fluxes from supernovae generates a few percent of L-form excess (initial asymmetry δ) packed into interstellar space. (2) Hydrodynamic core-mantle dynamics governed by the Taylor-Proudman theorem under rapid planetary rotation establishes a steady-state fluid cylinder in the outer core, sustaining a high magnetic Reynolds number to maintain a stable geomagnetic field over geological timescales. (3) This steady magnetic field aligns electron spins on magnetite surfaces, functioning via chiral-induced spin selectivity (CISS) to lock the cosmic subatomic bias into discrete macroscopic physical boundary conditions. (4) Under these boundaries, non-linear autocatalytic networks and evolutionary replicator dynamics trigger a strict kinetic priority advantage, driving an absolute thermodynamic monopoly of the L-form within fewer than 10 generations. This formulation maps a seamless, mathematically rigorous causal link spanning subatomic asymmetry, planetary-scale geophysical shielding, and the deterministic emergence of biological homochirality, achieving full closure of cosmological selection.