Starobinsky-like inflation in no-scale supergravity Wess-Zumino model with Polonyi term

Understand

We propose a simple modification of the no-scale supergravity Wess-Zumino model of Starobinsky-like inflation to include a Polonyi term in the superpotential.

• The purpose of this term is to provide an explicit mechanism for supersymmetry breaking at the end of inflation.
• We show how successful inflation can be achieved for a gravitino mass satisfying the strict upper bound $m_{3/2}< 10^3$ TeV, with favoured values $m_{3/2}\lesssim\mathcal{O}(1)$ TeV.
• The model suggests that SUSY may be discovered in collider physics experiments such as the LHC or the FCC.