Gravity-mediated supersymmetry breaking in grand unified theories
Absence of $μ$-Problem in Grand Unification
Using properties of goldstino, we show that in generic grand unified theories with gravity-mediated supersymmetry breaking the is non-existent.What happens is that supersymmetry breaking universally induces the shifts of the heavy fields that generate and terms.In the leading order, these are given by the mass of gravitino and are insensitive to the scale of grand unification.The mechanism works regardless whether doublet-tripletsplitting is achieved via fine-tuning or not.We illustrate this general phenomenon on explicit examples of theories that achieve doublet-triplet splitting dynamically.
