Minimal scalar-less matter-coupled supergravity

Understand

We build the minimal supergravity model where the nilpotent chiral goldstino superfield is coupled to a chiral matter superfield, realising a different non-linear representation through a mixed nilpotency constraint.

• The model describes the spontaneous breaking of local supersymmetry in the presence of a generically massive Majorana fermion, but in the absence of elementary scalars.
• The sign and the size of the cosmological constant, the spectrum and the four-fermion interactions are controlled by suitable parameters.