Gravitational waves induced by large primordial curvature fluctuations may result in a
sizable stochastic gravitational wave background. Interestingly, curvature fluctuations are …

In this article we investigate the cumulative stochastic gravitational wave spectra as a tool to
gain insight on the creation mechanism of primordial black holes. We consider gravitational …

Supersymmetry predicts multiple flat directions, some of which carry a net baryon or lepton
number. Condensates in such directions form during inflation and later fragment into Q balls …

Gravitational waves are a unique probe of the early Universe, as the Universe is transparent
to gravitational radiation right back to the beginning. In this article, we summarise detection …

We show that an ultralight primordial black hole (PBH) dominated phase makes blue-tilted
inflationary gravitational waves (BGW) compatible with the recent detection of an nHz …

In this article we have used stochastic gravitational wave background as a unique probe to
gain insight regarding the creation mechanism of primordial black holes. We have …

An epoch of matter domination in the early universe can enhance the primordial stochastic
gravitational wave signal, potentially making it detectable to upcoming gravitational wave …

A bstract We conduct an analysis of a U (1) B− L extended inert doublet model and obtained
the parameter space allowing strong first order phase transitions. We show that a large part …

We perform a study to obtain the initial spin or the nondimensional Kerr parameter $ a_ {*} $
of primordial black holes (PBHs) created during the radiation dominated phase of the …

Blue-tilted Gravitational Waves (BGWs) have been proposed as a potential candidate for the
cosmic gravitational waves detected by Pulsar Timing Arrays (PTA). In the standard …