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We study the vacuum structure in 5D SO(10) grand unified theory (GUT) compactified on S1/Z2 orbifold, where SO(10) is broken into SU(3)×SU(2)×U(1)2 through the boundary conditions. Although a lot of people extended to 6D to avoid massless colored particle, we can show they obtain finite masses by the radiative corrections. In a supersymmetric case, the fermionic partner of the zero-mode can also acquire...
This Letter demonstrates that, as in flipped SU(5) models, doublet-triplet splitting is accomplished by a missing partner mechanism in flipped SO(10) models. The gauge group SO(10) F ×U(1)V′ F includes SU(2) E gauge symmetry, which plays an important role in solving the supersymmetric (SUSY) flavor problem by introducing non-abelian horizontal gauge symmetry and anomalous U(1)...
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