Primordial non-Gaussianity up to all orders: Theoretical aspects and implications for primordial black hole models [PDF]
Physical Review D, 2022 We develop an exact formalism for the computation of the abundance of primordial black holes (PBHs) in the presence of local non-gaussianity (NG) in the curvature perturbation field.
Giacomo Ferrante +3 more
semanticscholar +1 more source
No constraints for f(T) gravity from gravitational waves induced from primordial black hole fluctuations [PDF]
The European Physical Journal C, 2022 Primordial black hole (PBH) fluctuations can induce a stochastic gravitational wave background at second order, and since this procedure is sensitive to the underlying gravitational theory it can be used as a novel tool to test general relativity and ...
T. Papanikolaou +3 more
semanticscholar +1 more source
PBH Formation from Spherically Symmetric Hydrodynamical Perturbations: A Review
Universe, 2022 Primordial black holes, which could have been formed in the very early Universe due to the collapse of large curvature fluctuations, are currently one of the most attractive and fascinating research areas in cosmology for their possible theoretical and ...
Albert Escrivà
doaj +1 more source
Reconstruction of power spectrum of primordial curvature perturbations on small scales from primordial black hole binaries scenario of LIGO/VIRGO detection [PDF]
Science China Physics Mechanics and Astronomy, 2022 As a candidate bound for the Binary Black Hole (BBH) merger events detected by LIGO/Virgo, Primordial Black Holes (PBHs) provide a useful tool to investigate the primordial curvature perturbations on small scales.
Xinpeng Wang +3 more
semanticscholar +1 more source
Primordial black holes in matter-dominated eras: The role of accretion
Physics Letters B, 2022 We consider the role of secondary infall and accretion onto an initially overdense perturbation in matter-dominated eras, like the one which is likely to follow the end of inflation.
Valerio De Luca +4 more
doaj +1 more source
Primordial black hole formation in Starobinsky's linear potential model [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 We study the power spectrum of the comoving curvature perturbation ℛ in the model that glues two linear potentials of different slopes, originally proposed by Starobinsky.
Shi Pi, Jianing Wang
semanticscholar +1 more source
This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor J. Andrews) to be published by Elsevier as a Reference Module.
Carr, Bernard, Kuhnel, Florian
+9 more sources
Constraints on primordial-black-hole population and cosmic expansion history from GWTC-3 [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Gravitational waves (GWs) from compact binary coalescences provide an independent probe of the cosmic expansion history other than electromagnetic waves.
Zu-Cheng Chen +3 more
semanticscholar +1 more source
Implications of stochastic effects for primordial black hole production in ultra-slow-roll inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 We study the impact of stochastic noise on the generation of primordial black hole (PBH) seeds in ultra-slow-roll (USR) inflation with numerical simulations.
Daniel G. Figueroa +3 more
semanticscholar +1 more source
Thakurta metric does not describe a cosmological black hole
Physics Letters B, 2022 Recently, the Thakurta metric has been adopted as a model of primordial black holes. We show that the spacetime described by this metric has neither black-hole event horizon nor black-hole trapping horizon and involves the violation of all the standard ...
Tomohiro Harada +2 more
doaj +1 more source