Limits on planetary-mass primordial black holes from the OGLE high-cadence survey of the Magellanic Clouds

P Mróz, A Udalski, MK Szymański… - The Astrophysical …, 2024 - iopscience.iop.org
Observations of the Galactic bulge revealed an excess of short-timescale gravitational
microlensing events that are generally attributed to a large population of free-floating or wide …

Primordial black holes in non-canonical scalar field inflation driven by quartic potential in the presence of bump

S Heydari, K Karami - Journal of Cosmology and Astroparticle …, 2024 - iopscience.iop.org
Abstract Here, generation of Primordial Black Holes (PBHs) from quartic potential in the
presence of a tiny bump in non-canonical inflationary model has been inquired. It is …

Primordial black holes and scalar-induced gravitational waves in radiative hybrid inflation

A Afzal, A Ghoshal - The European Physical Journal C, 2024 - Springer
We study the possibility that primordial black holes (PBHs) can be formed from large
curvature perturbations generated during the waterfall phase transition due to the effects of …

Primordial black holes in non-minimal Gauss–Bonnet inflation in light of the PTA data

M Solbi, K Karami - The European Physical Journal C, 2024 - Springer
Here, we investigate the formation of primordial black holes (PBHs) in non-minimal coupling
Gauss–Bonnet inflationary model in the presence of power-law potentials. We employ a two …

Primordial black holes in SB SUSY Gauss-Bonnet inflation

A Ashrafzadeh, M Solbi, S Heydari… - Journal of Cosmology …, 2025 - iopscience.iop.org
Here, we explore the formation of primordial black holes (PBHs) within a scalar field
inflationary model coupled to the Gauss-Bonnet (GB) term, incorporating the low-scale …

Inflationary dynamics of Mutated Hilltop inflation in Einstein–Gauss–Bonnet Gravity under new slow-roll approximations with generalized reheating

M Zahoor, KA Wani, IA Bhat - Physics of the Dark Universe, 2025 - Elsevier
The advancement in the observational cosmology of the early universe such as Cosmic
Microwave Background (CMB) observations, puts severe constraints on the inflationary …

Primordial black holes generated by fast-roll mechanism in non-canonical natural inflation

S Heydari, K Karami - arxiv preprint arxiv:2405.08563, 2024 - arxiv.org
In this work, a new fast-roll (FR) mechanism to generate primordial black holes (PBHs) and
their coeval gravitational waves (GWs) in generalized non-canonical natural inflation is …

Inflationary Dynamics in Einstein-Gauss-Bonnet Gravity Using New Slow-Roll Approximations considering Generalised Reheating

IA Bhat, MR Gangopadhyay - arxiv preprint arxiv:2408.01670, 2024 - arxiv.org
The Cosmic Microwave Background (CMB) observations results reported by {\it Planck}
satellite suggest a plateau characteristic in the flat potential of the inflaton field is favored to …

Non-Standard Thermal History and Formation of Primordial Black Holes in Einstein-Gauss-Bonnet Gravity

A Mohammadi - arxiv preprint arxiv:2501.01867, 2025 - arxiv.org
Inflation provides a suitable environment for the formation of Primordial Black Holes (PBHs).
In this article, we examine the formation of primordial black holes in the Mutated Hilltop …