Gauge-Higgs Grand Unification

Abstract

$SO(11)$ gauge-Higgs grand unification in the Randall-Sundrum warped space is proposed. Orbifold boundary conditions and one brane scalar field reduce $SO(11)$ to the standard model symmetry, which is further broken to $SU(3{)}_C\times U(1{)}_{EM}$ by the Hosotani mechanism. In a minimal model quarks and leptons are contained in a multiplet in $32$ of $SO(11)$ in each generation. Proton decay is naturally suppressed by a conserved fermion number.

12 pages, 1 figure; the discussion about NG modes is changed