9 papers · 1 filter
Two-parameter continuous deformation of Starobinsky inflation as a bridge between Planck and ACT DESI data with
G. German
We present a family of plateau-type inflationary potentials, eq.~\eqref{Vgeneral}, and analyze a two-parameter -Starobinsky specialization that interpolates continuously betwee…
Bayesian analysis of -Starobinsky model with Planck, ACT and DESI data
Karim Carrion, Francisco X. Linares Cedeño, Gabriel Germán +1
We present a joint Bayesian analysis to impose constraints on the generalized -Starobinsky inflationary model using the high-precision cosmological datasets: Planck, CMB lensing…
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…
Perturbative analysis of the reheating dynamics of -attractors
Gabriel German
We study the reheating phase following inflation in the context of single-field models, focusing on the perturbative decay of the inflaton into lighter particles. A general analyti…
Reheating Dynamics in Inflationary Cosmology: Insights from -Attractor and -Starobinsky Models
Gabriel German
Reheating in inflationary cosmology is essential for understanding the early universe, influencing particle production, thermalization, and the primordial power spectrum. Crucial q…
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…
Reheating constraints and consistency relations of the Starobinsky model and some of its generalizations
Marcos A. G. Garcia, Gabriel Germán, R. Gonzalez Quaglia +1
Building on the success of the Starobinsky model in describing the inflationary period of the universe, we investigate two simple generalizations of this model and their constraint…