We consider the direct s-channel gravitational production of dark matter during the reheating
process. Independent of the identity of the dark matter candidate or its nongravitational …

We analyze in detail the perturbative decay of the inflaton oscillating about a generic form of
its potential V (ϕ)= ϕ k, taking into account the effects of non-instantaneous reheating. We …

We perform a systematic analysis of dark matter production during postinflationary
reheating. Following the period of exponential expansion, the inflaton begins a period of …

A bstract A model of vector dark matter that communicates with the Standard Model only
through gravitational interactions has been investigated. It has been shown in detail how …

We investigate the power spectrum of Non-Cold Dark Matter (NCDM) produced in a state out
of thermal equilibrium. We consider dark matter production from the decay of scalar …

We consider the effects of fragmentation on the post-inflationary epoch of reheating. In
simple single field models of inflation, an inflaton condensate undergoes an oscillatory …

Gravitational particle production is a minimal contribution to reheating the Universe after the
end of inflation. To study this production channel, two different approaches have commonly …

A bstract In this paper, we extensively analyzed the reheating dynamics after inflation and
looked into its possible implication on dark matter (DM) and inflaton phenomenology. We …

We investigate the production of particle Dark Matter (DM) in a minimal freeze-in model
considering a non-instantaneous reheating phase after inflation. We demonstrate that for …

We propose a novel scenario to produce abundant primordial black holes (PBHs) in new
inflation which is a second phase of a double inflation in the supergravity framework. In our …