Zobrazeno 1 - 10
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pro vyhledávání: '"Padilla, Luis A"'
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 field. During such an epoch, perturbations in the inflaton virialize
Externí odkaz:
http://arxiv.org/abs/2405.19271
Autor:
Padilla, Luis E., Hidalgo, Juan Carlos, Gomez-Aguilar, Tadeo D., Malik, Karim A., German, Gabriel
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 field to standard model particles becomes effective at slow temperatures}
Externí odkaz:
http://arxiv.org/abs/2402.03542
The study of reheating in inflationary models is crucial for understanding the early universe and gaining insights into inflationary dynamics and parameters. The reheating temperature $T_{re}$ and the duration of the reheating phase, quantified by th
Externí odkaz:
http://arxiv.org/abs/2310.05221
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 the end of inflation and the Standard radiation-dominated (RD) universe
Externí odkaz:
http://arxiv.org/abs/2308.04642
This paper focuses on the Starobinsky model of inflation. We derive solutions for various cosmological observables, such as the scalar spectral index $n_s$, the tensor-to-scalar ratio $r$ and their runnings, as well as the number of $e$-folds of infl
Externí odkaz:
http://arxiv.org/abs/2307.08257
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. During this epoch, small perturbations from the inflaton that reente
Externí odkaz:
http://arxiv.org/abs/2303.16428
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 this context, we have postulated a new mechanism of primordial black ho
Externí odkaz:
http://arxiv.org/abs/2208.09462
Publikováno v:
In Journal of Controlled Release December 2024 376:880-898
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 collapse and black hole formation in this era to be approached by the
Externí odkaz:
http://arxiv.org/abs/2110.14584
Publikováno v:
Phys. Rev. D 104, 083513 (2021)
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, in the constant mean curvature slicing. We derive general solutions
Externí odkaz:
http://arxiv.org/abs/2107.01187