The Standard Model on the Quintic

摘要: We describe the general geometrical framework of brane world constructions in orientifolds type IIA string theory with D6-branes wrapping 3-cycles a Calabi-Yau 3-fold, and point out their immediate phenomenological relevance. These branes generically intersect points, patterns intersections govern chiral fermion spectra issues gauge supersymmetry breaking low energy effective on volume. In particular, we provide an example intersecting scenario quintic group spectrum Standard Model discuss its properties some detail. Additionally explain related technical advancements construction supersymmetric orientifold vacua D-branes. Six-dimensional this generalize rather limited set formerly known orbifolds I, presented techniques short-cut to obtain spectra. Finally, comment lifting configurations M-theory non-compact G_2 manifolds.