[HTML][HTML] Primordial non-Gaussianity as a saviour for PBH overproduction in SIGWs generated by Pulsar Timing Arrays for Galileon inflation
We investigate the explicit role of negative local non-Gaussianity, f NL, in suppressing the
abundance of primordial black holes (PBHs) in the single-field model of Galileon inflation …
abundance of primordial black holes (PBHs) in the single-field model of Galileon inflation …
[HTML][HTML] Supermassive primordial black holes from inflation
D Hooper, A Ireland, G Krnjaic… - Journal of Cosmology …, 2024 - iopscience.iop.org
There is controversy surrounding the origin and evolution of our universe's largest
supermassive black holes (SMBHs). In this study, we consider the possibility that some of …
supermassive black holes (SMBHs). In this study, we consider the possibility that some of …
Large fluctuations and primordial black holes
S Choudhury, M Sami - arXiv preprint arXiv:2407.17006, 2024 - arxiv.org
In this paper, we review in detail different mechanisms of generation of large primordial
fluctuations and their implications for the production of primordial black holes (PBHs) and …
fluctuations and their implications for the production of primordial black holes (PBHs) and …
Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
We demonstrate the explicit realisation of the ultra-slow roll phase in the framework of the
effective field theory of single-field Galileon inflation. The pulsar timing array (PTA) …
effective field theory of single-field Galileon inflation. The pulsar timing array (PTA) …
Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
S Choudhury, S Ganguly, S Panda… - … of Cosmology and …, 2024 - iopscience.iop.org
In order to unravel the present situation of the PBH overproduction problem, our study
emphasizes the critical role played by the equation of state (EoS) parameter w within the …
emphasizes the critical role played by the equation of state (EoS) parameter w within the …
Non-Gaussianities in primordial black hole formation and induced gravitational waves
S Pi - arXiv preprint arXiv:2404.06151, 2024 - arxiv.org
The most promising mechanism of generating primordial black holes (PBHs) is by the
enhancement of power spectrum of the primordial curvature perturbation, which is usually …
enhancement of power spectrum of the primordial curvature perturbation, which is usually …
Robust -distortion constraints on primordial supermassive black holes from non-Gaussian perturbations
CT Byrnes, J Lesgourgues, D Sharma - arXiv preprint arXiv:2404.18475, 2024 - arxiv.org
Explaining the origin of supermassive black holes via a primordial origin is severely
challenged by the tight spectral distortion constraints on the amplitude of the primordial …
challenged by the tight spectral distortion constraints on the amplitude of the primordial …
[HTML][HTML] Mechanisms for Producing Primordial Black Holes from Inflationary Models beyond Fine-Tuning
I Stamou - Universe, 2024 - mdpi.com
In this study, we present an analysis of the fine-tuning required in various inflationary models
in order to explain the production of Primordial Black Holes (PBHs). We specifically examine …
in order to explain the production of Primordial Black Holes (PBHs). We specifically examine …
Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
We present a complete and consistent exposition of the regularization, renormalization, and
resummation procedures in the setup of having a contraction and then non-singular bounce …
resummation procedures in the setup of having a contraction and then non-singular bounce …
[PDF][PDF] ournal of Cosmology and Astroparticle Physics
D Hooper, A Ireland, G Krnjaica, A Stebbinsc - 2024 - inspirehep.net
There is controversy surrounding the origin and evolution of our universe's largest
supermassive black holes (SMBHs). In this study, we consider the possibility that some of …
supermassive black holes (SMBHs). In this study, we consider the possibility that some of …