Constant-roll inflation from a fermionic field
  We study the inflationary period driven by a fermionic field which is
non-minimally coupled to gravity in the context of the constant-roll approach.
We consider the model for a specific form of coupling and perform the
corresponding inflationary analysis. By comparing the result with the Planck
observations coming from CMB anisotropies, we find the observational
constraints on the parameters space of the model and also the predictions the
model. We find that the values of $r$ and $n_{s}$ for $-1.5<\beta\leq-0.9$ are
in good agreement with the observations when $|\xi|=0.1$ and $N=60$.
