# Mechanism of primordial black holes production and secondary gravitational waves in α-attractor Galileon inflationary scenario

@article{Teimoori2021MechanismOP,
title={Mechanism of primordial black holes production and secondary gravitational waves in $\alpha$-attractor Galileon inflationary scenario},
author={Zeinab Teimoori and Kazem Rezazadeh and Mariwan Ahmed Rasheed and Kayoomars Karami},
journal={Journal of Cosmology and Astroparticle Physics},
year={2021},
volume={2021}
}
• Published 15 July 2021
• Physics
• Journal of Cosmology and Astroparticle Physics
We study the process of the Primordial Black Holes (PBHs) production in the novel framework, namely α-attractor Galileon inflation (G-inflation) model. In our framework, we take the Galileon function as G(ϕ)=GI (ϕ)(1+GII (ϕ)), where the part GI (ϕ) is motivated from the α-attractor inflationary scenario in its original non-canonical frame, and it ensures for the model to be consistent with the Planck 2018 observations at the CMB scales. The part GII (ϕ) is invoked to enhance the curvature…
• Physics
Journal of Cosmology and Astroparticle Physics
• 2022
Here, Primordial Black Holes (PBHs) creation from exponential potential has been inquired, through gravitationally raised friction emanated from the nonminimal coupling between gravity and field
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. With the basic α -attractor potentials, we investigate an inﬂationary regime in the high- k limit, where the cosmological perturbation breaks down due to large enhancement in the scalar power
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• 2021
With the basic α-attractor potentials, we investigate an inflationary regime in the high-k limit, where the cosmological perturbation breaks down due to large enhancement in the scalar power spectrum
• Physics
• 2023
We examine the possibility of Primordial Black Holes (PBHs) formation in single ﬁeld models of inﬂation. We show that a one-loop correction to the renormalized primordial power spectrum rules out the
• Economics
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. We construct an analytically solvable simpliﬁed model that captures the essential features for primordial black hole (PBH) production in most models of single-ﬁeld inﬂation. The construction makes
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The European Physical Journal C
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We investigate the generation of primordial black holes (PBHs) with the aid of gravitationally increased friction mechanism originated from the nonminimal field derivative coupling (NMDC) to gravity
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Physical Review D
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The gravitationally enhanced friction can reduce the speed of the inﬂaton to realize an ultra-slow-roll inﬂation, which will amplify the curvature perturbations. The ampliﬁed perturbations can
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We study the ampliﬁcation of the curvature perturbations due to a small sound speed and ﬁnd that its origin is diﬀerent completely from that due to the ultraslow-roll inﬂation. This is because when

### J C A P 0 3 ( 2 0 2 2 ) 0 3 3 ournal of C osmology and A stroparticle P hysics

• 2022
• Physics
The European Physical Journal C
• 2022
We study the non-Gaussianity and secondary Gravitational Waves (GWs) in the process of the Primordial Black Holes (PBHs) production from inflation. In our work, we focus on the $$\alpha$$ α

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