8 papers
Primordial Black Hole Formation in a Scalar Field Dominated Universe: Investigation of the Critical nature of the Collapse
Luis E. Padilla, Ethan Milligan, David J. Mulryne +1
In this paper, we investigate the critical collapse leading to primordial black hole (PBH) formation in a universe dominated by a self-interacting scalar field with a quartic poten…
Viability of generalized -inflation from Planck, ACT, and DESI Data
Gabriel German, Juan Carlos Hidalgo
We study inflationary constraints from reheating on two classes of single-field inflationary models: a generalized -attractor with potential $V(ϕ) = V_0 \!\left(1 - \sech^p\!\le…
Primordial Black Hole Formation in a Scalar Field Dominated Universe
Ethan Milligan, Luis E. Padilla, David J. Mulryne +1
We present a numerical code that solves the Misner-Sharp system for a spherically symmetric cosmological model containing both a scalar field and a perfect fluid. While the code is…
Modeling the 3-point correlation function of projected scalar fields on the sphere
Abraham Arvizu, Alejandro Aviles, Juan Carlos Hidalgo +5
One of the main obstacles for the signal extraction of the three point correlation function using photometric surveys, such as the Rubin Observatory Legacy Survey of Space and Time…
Detecting the Stochastic Gravitational Wave Background from Primordial Black Holes in Slow-reheating Scenarios
Luis E. Padilla, Juan Carlos Hidalgo, Karim A. Malik +1
After primordial inflation, the universe may have experienced a prolonged reheating epoch, potentially leading to a phase of matter domination supported by the oscillating inflaton…
Primordial black hole formation during slow-reheating: A review
Luis E. Padilla, Juan Carlos Hidalgo, Tadeo D. Gomez-Aguilar +2
In this paper we review the possible mechanisms for the production of primordial black holes (PBHs) during a slow-reheating period {in which the energy transfer of the inflaton fie…
Bayesian Analysis of a Generalized Starobinsky Model with Reheating Constraints
Francisco X. Linares Cedeño, Gabriel Germán, Juan Carlos Hidalgo
We study a generalization of the the Starobinsky model adding a term of the form to the Einstien-Hilbert action. We take the power as a parameter of the model and expl…
Inflationary models constrained by reheating
Gabriel German, Juan Carlos Hidalgo, Luis E. Padilla
The study of reheating in inflationary models is crucial for understanding the early universe and gaining insights into inflationary dynamics and parameters. The reheating temperat…