Primordial black holes from inflation and quantum diffusion

By M. Biagetti, G. Franciolini, A. Kehagias, A. Riotto. Journal of Cosmology and Astroparticle Physics, 2018

172 citations recorded by the source corpus.

Primordial black holes as dark matter may be generated in single-field models of inflation thanks to the enhancement at small scales of the comoving curvature perturbation. This mechanism requires leaving the slow-roll phase to enter a non-attractor phase during which the inflaton travels across a plateau and its velocity drops down exponentially. We argue that quantum diffusion has a significant impact on the primordial black hole mass fraction making the classical standard prediction not trustable.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/516ecef11e810ec6e476394ed399b47edb43c60f

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. G. Tringas
2. I. Dalianis
3. D. K. Hazra
4. M. Braglia
5. A. Kehagias
6. A. Starobinsky
7. F. Finelli
8. G. Smoot

In Nuclear and High Energy Physics

1. G. Tringas
2. I. Dalianis
3. A. Kehagias
4. A. Starobinsky
5. F. Finelli
6. G. Smoot
7. L. Sriramkumar
8. S. Tsujikawa

Citations in the corpus

• Primordial black holes from α-attractors (2018, background): “The prediction of the PBH relic density is very sensitive to the quantity β(Mk) [37].”
• Generating PBHs and small-scale GWs in two-field models of inflation (2020, background): “[24–26] for the effects of quantum diffusion in the PBH abundance.”