Heterotic MSSM on a Resolved Orbifold

Understand

We construct an MSSM with three generations from the heterotic string compactified on a smooth 6D internal manifold using Abelian gauge fluxes only.

• The compactification space is obtained as a resolution of the T6/Z2xZ2xZ2-free orbifold.
• The Z2-free involution of such a resolution breaks the SU(5) GUT group down to the SM gauge group using a suitably chosen (freely acting) Wilson line.
• Surprisingly, the spectrum on a given resolution is larger than the one on the corresponding orbifold taking into account the branching and Higgsing due to the blow-up modes.