[HTML][HTML] Primordial black holes and gravitational waves from non-canonical inflation
T Papanikolaou, A Lymperis, S Lola… - Journal of Cosmology …, 2023 - iopscience.iop.org
Primordial black holes (PBHs) can generically form in inflationary setups through the
collapse of enhanced cosmological perturbations, providing us access to the early Universe …
collapse of enhanced cosmological perturbations, providing us access to the early Universe …
Growth of curvature perturbations for PBH formation & detectable GWs in non-minimal curvaton scenario revisited
C Chen, A Ghoshal, Z Lalak, Y Luo… - Journal of Cosmology …, 2023 - iopscience.iop.org
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 …
trivial field metric λ (ϕ) where ϕ is an inflaton field, and incorporate the effect from the non …
Successful Higgs inflation from combined nonminimal and derivative couplings
S Karydas, E Papantonopoulos, EN Saridakis - Physical Review D, 2021 - APS
We propose an inflationary scenario based on the concurrent presence of nonminimal
coupling (NMC) and generalized nonminimal derivative coupling (GNMDC), in the context of …
coupling (NMC) and generalized nonminimal derivative coupling (GNMDC), in the context of …
Reheating constraints on -inflation
P Pareek, A Nautiyal - Physical Review D, 2021 - APS
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 …
and a power-law kinetic term from reheating. For the DBI kinetic term we choose monomial …
Hamilton–Jacobi formalism for k-inflation
RJ Yang, M Liu - Physics of the Dark Universe, 2024 - Elsevier
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 …
observables such as the scalar power spectrum, the tensor-to-scalar ratio, the scalar spectra …
Non-perturbative gauge invariant scalar fluctuations of the metric in Higgs inflation from complex geometrical scalar–tensor theory of gravity
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 …
perturbative formalism for a Higgs inflationary model recently introduced in the framework of …
Extended constant-roll condition in non-canonical scalar field inflation
F Mavoa, H Hova, S Houndjo… - … Journal of Geometric …, 2023 - ui.adsabs.harvard.edu
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 …
use in particular two types of non-canonical fields, namely, the tachyon field and the Dirac …
[PDF][PDF] Μελέτη εναλλακτικών θεωριών Βαρύτητας στην Κοσμολογία, ενόψει των νέων παρατηρήσεων από Βαρυτικά Κύματα
Σ Καρύδας - 2023 - dspace.lib.ntua.gr
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 …
spacetime as we understand it today. According to GR, there exist solutions of the field …