Cascading to the MSSM

Understand

The MSSM can arise as an orientifold of a pyramid-like quiver in the context of intersecting D-branes.

• Here we consider quiver realizations of the MSSM which can emerge at the bottom of a duality cascade.
• We classify all possible minimal ways this can be done by allowing only one extra node.
• It turns out that this requires extending the geometry of the pyramid to an octahedron.