Post-Inflationary Production of Dark Matter after Inflection Point Slow Roll Inflation

We explore a feasible model that combines near-inflection point small-field slow roll inflationary scenario driven by single scalar inflaton with the production of non-thermal vector-like fermionic dark matter, χ, during reheating era. For scenario, we consider two separate polynomial forms potential; one is symmetric about origin, and other not. fix coefficients potentials satisfying current Planck-Bicep data. calculate permissible range yχ mχ for enough matter to explain total Cold Dark Matter (CDM) mass density present universe while Cosmic Background Radiation (CMBR) measurements cosmological bounds.