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Primordial black holes and their gravitational-wave signatures
E Bagui, S Clesse, V De Luca, JM Ezquiaga… - Living Reviews in …, 2025 - Springer
In the recent years, primordial black holes (PBHs) have emerged as one of the most
interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could …
interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could …
Inflation and primordial black holes
O Özsoy, G Tasinato - Universe, 2023 - mdpi.com
We review conceptual aspects of inflationary scenarios able to produce primordial black
holes by amplifying the size of curvature fluctuations to the level required to trigger black …
holes by amplifying the size of curvature fluctuations to the level required to trigger black …
Constraining primordial black hole formation from single-field inflation
J Kristiano, J Yokoyama - Physical Review Letters, 2024 - APS
The most widely studied formation mechanism of a primordial black hole is collapse of large-
amplitude perturbation on small scales generated in single-field inflation. In this Letter, we …
amplitude perturbation on small scales generated in single-field inflation. In this Letter, we …
Hybrid α-attractors, primordial black holes and gravitational wave backgrounds
We investigate the two-stage inflation regime in the theory of hybrid cosmological α-
attractors. The spectrum of inflationary perturbations is compatible with the latest …
attractors. The spectrum of inflationary perturbations is compatible with the latest …
Inflationary Butterfly Effect: Nonperturbative Dynamics from Small-Scale Features
A Caravano, K Inomata, S Renaux-Petel - Physical Review Letters, 2024 - APS
For the first time, we investigate the nonperturbative dynamics of single field inflation with a
departure from slow roll. Using simulations, we find that oscillatory features in the potential …
departure from slow roll. Using simulations, we find that oscillatory features in the potential …
Anatomy of single-field inflationary models for primordial black holes
A Karam, N Koivunen, E Tomberg… - … of Cosmology and …, 2023 - iopscience.iop.org
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 …
for primordial black hole (PBH) production in most models of single-field inflation. The …
Squeezed bispectrum and one-loop corrections in transient constant-roll inflation
H Motohashi, Y Tada - Journal of Cosmology and Astroparticle …, 2023 - iopscience.iop.org
In canonical single-field inflation, the production of primordial black holes (PBH) requires a
transient violation of the slow-roll condition. The transient ultra slow-roll inflation is an …
transient violation of the slow-roll condition. The transient ultra slow-roll inflation is an …
Questions on calculation of primordial power spectrum with large spikes: the resonance model case
Inflationary models predicting a scale-dependent large amplification of the density
perturbations have recently attracted a lot of attention because the amplified perturbations …
perturbations have recently attracted a lot of attention because the amplified perturbations …
Primordial black holes from single-field inflation: a fine-tuning audit
PS Cole, AD Gow, CT Byrnes… - Journal of Cosmology and …, 2023 - iopscience.iop.org
All single-field inflationary models invoke varying degrees of tuning in order to account for
cosmological observations. Mechanisms that generate primordial black holes (PBHs) from …
cosmological observations. Mechanisms that generate primordial black holes (PBHs) from …
Highly non-Gaussian tails and primordial black holes from single-field inflation
For primordial perturbations, deviations from Gaussian statistics on the tail of the probability
distribution can be associated with non-perturbative effects of inflation. In this paper, we …
distribution can be associated with non-perturbative effects of inflation. In this paper, we …