1D Supergravity FLRW Model of Starobinsky

We study two homogeneous supersymmetric extensions for the f(R) modified gravity model of Starobinsky with FLRW metric. The actions are defined in terms a superfield R that contains scalar curvature. One has N = 1 local supersymmetry, and its bosonic sector is action; other action 2, contains, additional to Starobinsky, massive field without self-interaction. As expected, sectors these models consistent cosmic inflation, as we show by solving numerically classical dynamics. Inflation driven R2 term during large curvature regime. In 2 case, remains low energy state inflation. Further, means an superfield, write equivalent tensor-scalar-like from which can give Hamiltonian formulation.