Cosmological gravitational particle production (CGPP) is the creation of particles in an
expanding universe due solely to their gravitational interaction. These particles can play an …

We consider the effects of nonminimal couplings to curvature of the form ξ SS 2 R for three
types of scalars: the Higgs boson, the inflaton, and a scalar dark matter candidate. We …

We explore the possibility of producing the observed matter-antimatter asymmetry of the
Universe uniquely from the evaporation of primordial black holes (PBHs) that are formed in …

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 …

Our present understanding of the reheating phase is incomplete due to a lack of
observations. Apart from its cosmological implications, the reheating should play a vital role …

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 …

We investigate the stochastic gravitational wave (GW) spectrum resulting from graviton
bremsstrahlung during inflationary reheating. We focus on an inflaton ϕ oscillating around a …

We are in the era of precision cosmology which offers us a unique opportunity to investigate
beyond standard model physics. Toward this endeavor, inflaton is assumed to be a perfect …

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 …

A bstract A reheating phase in the early universe is an essential part of all inflationary
models during which not only the Standard Model (SM) quanta are produced but it can also …