We propose a new way of probing the nonthermal origin of baryon asymmetry of the
Universe (BAU) and dark matter (DM) from evaporating primordial black holes (PBHs) via …

A bstract The Standard Model, extended with three right-handed (RH) neutrinos, is the
simplest model that can explain light neutrino masses, the baryon asymmetry of the …

A bstract We study a scenario where both dark matter and heavy right handed neutrino
(RHN) responsible for leptogenesis acquire masses by crossing the relativistic bubble walls …

We study the effect of an ultralight primordial black hole (PBH) dominated phase on the
gravitational wave (GW) spectrum generated by a cosmic string (CS) network formed as a …

Motivated by the recent release of new results from five different pulsar timing array (PTA)
experiments claiming to have found compelling evidence for primordial gravitational waves …

We study stochastic gravitational waves from cosmic strings generated in an ultraviolet-
complete model for pseudo-Nambu-Goldstone dark matter with a hidden ${U (1)} $ gauge …

A bstract A long-lived scalar field (Φ) which couples weakly to the right-handed (RH)
neutrinos (N Ri), generates small RH neutrino masses (M i) in Low-Scale-Leptogenesis …

We propose a scenario where dark matter (DM) with a wide mass range from a few keV to
PeV can be produced solely from evaporating primordial black holes (PBH), while being …

Motivated by the recent release of new results from five different pulsar timing array (PTA)
experiments claiming to have found compelling evidence for primordial gravitational waves …

We propose a scenario where a high scale seesaw origin of light neutrino mass and
gravitational dark matter (DM) in MeV-TeV ballpark originating from primordial black hole …