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 …

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 …

Compact stellar objects like supernovae and neutron stars are believed to cool by emitting
axions predominantly via bremsstrahlung (NN→ NN a), pion conversion (π-p+→ N a), and …

A bstract We investigate the reach of future gravitational wave (GW) detectors in probing
inflaton couplings with visible sector particles that can either be bosonic or fermionic in …

The postinflationary reheating phase is usually said to be solely governed by the decay of
coherently oscillating inflatons into radiation. In this submission, we explore a new avenue …

We compare the dark matter (DM) production processes and its parameters space in the
background of reheating obtained from two chief systems in the early Universe: the inflaton …

Over the last few years, primordial black holes (PBHs) have emerged as a strong candidate
for cold dark matter. A significant number of PBHs are produced when the strength of the …

Cosmological α-attractors are a compelling class of inflationary models. They lead to
universal predictions for large-scale observables, broadly independent from the functional …

We investigate two classes of inflationary models, which lead to a stiff period after inflation
that boosts the signal of primordial gravitational waves (GWs). In both families of models …

The low-frequency gravitons correspond to typical wavelengths that left the Hubble radius
during the early inflationary stages of expansion and reentered after matter radiation …