The QSL framework generates a geometric Dirac mass M_eff = (1/√6)|χ̇/χ| for spin-1/2 fermions from gravitational freeze-in, locked to H_* so that relic abundance depends on essentially one scale.
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Dark matter from the quadratic spinor Lagrangian I: Geometric mass for a gravitationally produced spin-1/2 fermion
The QSL framework generates a geometric Dirac mass M_eff = (1/√6)|χ̇/χ| for spin-1/2 fermions from gravitational freeze-in, locked to H_* so that relic abundance depends on essentially one scale.