Truly Gauge Unified SUGRA
In this SUSY model it is assumed that the Gauge couplings unify at
the GUT scale, (M_GUT~10^16GeV). In other words alpha1=alpha2 at this scale.
Gravitational interactions in a hidden sector at this scale produce
the universal soft SUSY breaking terms. Exact coupling unification yields too
large of a value for the the strong coupling constant at the weak scale.
This Unification is forced in this version of the SUGRA Model.