Primordial black holes (PBHs) can generically form in inflationary setups through the
collapse of enhanced cosmological perturbations, providing us access to the early Universe …

We revisit the growth of curvature perturbations in non-minimal curvaton scenario with a non-
trivial field metric λ (ϕ) where ϕ is an inflaton field, and incorporate the effect from the non …

We propose an inflationary scenario based on the concurrent presence of nonminimal
coupling (NMC) and generalized nonminimal derivative coupling (GNMDC), in the context of …

In this work we revisit constraints on k-inflation with a Dirac-Born-Infeld (DBI) kinetic term
and a power-law kinetic term from reheating. For the DBI kinetic term we choose monomial …

We propose a type of k-inflation under the Hamilton–Jacobi approach. We calculate various
observables such as the scalar power spectrum, the tensor-to-scalar ratio, the scalar spectra …

In this letter we investigate gauge invariant scalar fluctuations of the metric in a non-
perturbative formalism for a Higgs inflationary model recently introduced in the framework of …

In this work, we apply the extended constant-roll condition to non-canonical scalar fields. We
use in particular two types of non-canonical fields, namely, the tachyon field and the Dirac …

Einstein's General Theory of Relativity (GR), set the foundation for the study of Gravity and
spacetime as we understand it today. According to GR, there exist solutions of the field …