CMB constraints on dark matter phenomenology via reheating in minimal plateau inflation

We consider the CMB constraints on reheating and dark matter parameter space for a specific plateau type inflationary model. The plateau inflationary models which are currently most favored models from data can be well approximated by a potential of the form V(phi) proportional to phi(n) around phi = 0. This fact makes it possible to study the reheating phase with general inflaton equation of state in a viable cosmological scenario. In addition, following our recent work (Maity and Saha, 2018), we generalize the connection between reheating and the present CMB data and the dark matter parameter space for general inflaton equation of state parameter. (C) 2019 Elsevier B.V. All rights reserved.