Neutrino Masses and Mixing from Unified Quantum Gravity

Here, we derive neutrino masses and mixing angles within the framework of Unified Quantum Gravity (UQG) and discover the geometric origin of flavor physics. The theory naturally implements a Type-I see-saw mechanism where right-handed neutrino Majorana masses M_R are predicted (not assumed) from the quantum rigidity scale N = 43 and the fundamental scale v_pi ~ 10^16 GeV, giving M_R ~ 10^13 GeV. We predict normal mass hierarchy with Sigma m_nu approx 0.06 eV, consistent with cosmological bounds. The PMNS mixing matrix emerges from the same geometric structure that generates quark mixing (CKM matrix), but with significantly larger angles. Remarkably, we find theta_{13}^PMNS / theta_{13}^CKM approx N = 43, providing a geometric explanation for why lepton mixing is so much larger than quark mixing. We predict maximal atmospheric mixing (theta_{23} approx 45°), large CP violation (delta_{CP} ~ 200°), effective Majorana mass m_{betabeta} = 3.6 meV, and automatic connection to leptogenesis at M_R ~ 10^13 GeV. All predictions are falsifiable with current and near-future experiments (JUNO, DUNE, LEGEND, nEXO, CUPID). This work demonstrates that flavor physics is fundamentally geometric: the same quantum rigidity that determines black hole entropy and gravitational wave ringdown also determines the ratio of quark to lepton mixing.