64 citations · 232 across the 21 of their papers we have counts for
22 papers
Black holes from a Higgs-like field in the radiation era
Ethan Milligan, Luis E. Padilla, David J. Mulryne
Light spectator fields during inflation can acquire superhorizon fluctuations that cross a potential barrier between positive and negative regions of their potential. Motivated by…
Discrete self-similarity imprints on primordial-black-hole mass functions
Luis E. Padilla, Tomohiro Harada, Hayami Iizuka
We study how discrete self-similarity (DSS) in the critical behavior of scalar-field collapse is imprinted on primordial-black-hole (PBH) mass functions. Using the DSS-modulated cr…
Cosmological discrete self-similarity in primordial black hole formation
Luis E. Padilla, Tomohiro Harada, Ethan Milligan +1
We demonstrate that discrete self-similarity (DSS), originally discovered in the collapse of a massless scalar field in an asymptotically flat system, survives in primordial black…
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…
Suppression of the induced gravitational wave background due to third-order perturbations
Raphael Picard, Luis E. Padilla, Karim A. Malik +1
In this work, we revisit and evaluate new source terms which contribute to the induced gravitational wave background. We study their respective contributions to the stochastic grav…
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…
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…
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…
Constraints on primordial black holes for nonstandard cosmologies
Tadeo D. Gomez-Aguilar, Luis E. Padilla, Encieh Erfani +1
We study how the bounds on the abundance of Primordial Black Holes (PBHs) and the constraints on power spectrum are modified if a non-standard evolution phase takes place between t…
Solution for cosmological observables in the Starobinsky model of inflation
Gabriel German, Juan Carlos Hidalgo, Luis E. Padilla
This paper focuses on the Starobinsky model of inflation. We derive solutions for various cosmological observables, such as the scalar spectral index , the tensor-to-scalar ra…
Constraining inflationary potentials with inflaton PBHs
Luis E. Padilla, Juan Carlos Hidalgo, Gabriel German
If, after primordial inflation, the universe undergoes a relatively long reheating period, it could present a phase of matter domination supported by the oscillating inflaton field…
Production of PBHs from inflaton structure
Juan Carlos Hidalgo, Luis E. Padilla, Gabriel German
At times prior to Big Bang Nucleosynthesis, the universe could show a primordial structure formation period if dominated by a fast oscillating inflaton field during reheating. In t…
A new mechanism for primordial black hole formation during reheating
Luis E. Padilla, Juan Carlos Hidalgo, Karim A. Malik
The Reheating process at the end of inflation is often modeled by an oscillating scalar field which shows a background dust-like behaviour, prompting the analysis of gravitational…
Long-wavelength non-linear perturbations of a complex scalar field
Luis E. Padilla, Juan Carlos Hidalgo, Darío Núñez
We study the evolution of nonlinear superhorizon perturbations in a universe dominated by a complex scalar field. The analysis is performed adopting the gradient expansion approach…
Rotation curves with the multistate Scalar Field Dark Matter model
Jordi Solís-López, Luis E. Padilla, Tonatiuh Matos
We use the concept of co-added rotation curves of Salucci et al. to investigate the properties of axi-symmetric multistate Scalar Field Dark Matter halos in low surface brightness…
Complex Scalar Field Reheating and Primordial Black Hole production
Karim Carrion, Juan Carlos Hidalgo, Ariadna Montiel +1
We study perturbations of a complex scalar field during reheating with no self-interaction in the regime , when the scalar field has a fast oscillatory behaviour (close to…
Core-Halo Mass Relation in Scalar Field Dark Matter Models and its Consequences for the Formation of Supermassive Black Holes
Luis E. Padilla, Tanja Rindler-Daller, Paul R. Shapiro +2
Scalar-field dark matter (SFDM) halos exhibit a core-envelope structure with soliton-like cores and CDM-like envelopes. Simulations without self-interaction (free-field case) repor…
Consequences for the Scalar Field Dark Matter model from The McGaugh Observed-Baryon Acceleration Correlation
Luis E. Padilla, Jordi Solís-López, Tonatiuh Matos +1
Although the standard cosmological model, the so-called Cold Dark Matter ("CDM"), appears to fit well observations at the cosmological level, it is well known that it posses…
Cosmological parameter inference with Bayesian statistics
Luis E. Padilla, Luis O. Tellez, Luis A. Escamilla +1
Bayesian statistics and Markov Chain Monte Carlo (MCMC) algorithms have found their place in the field of Cosmology. They have become important mathematical and numerical tools, es…
Scalar Field Dark Matter Spectator During Inflation: The Effect of Self-interaction
Luis E. Padilla, J. Alberto Vázquez, Tonatiuh Matos +1
Nowadays cosmological inflation is the most accepted mechanism to explain the primordial seeds that led to the structure formation observed in the Universe. Current observations ar…
On the Possibility that Ultra-Light Boson halos host and form Super-massive Black Holes
Ana Avilez-Lopez, Luis Padilla-Albores Luis, Tula Bernal-Marin +1
Several observations suggest the existence of super-massive black holes (SMBH) at the centers of giant galaxies. However the mechanism under which these objects form remains non co…