Inflation with shallow dip and primordial black holes
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , |
|---|---|
| Format: | Preprint |
| Publié: |
2023
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866917850522845184 |
|---|---|
| author | Gu, Bao-Min Shu, Fu-Wen Yang, Ke |
| author_facet | Gu, Bao-Min Shu, Fu-Wen Yang, Ke |
| contents | Primordial black holes may arise through ultra slow-roll inflation. In this work we study a toy model of ultra slow-roll inflation with a shallow dip. The ultra slow-roll stage enhances the curvature perturbations and thus the primordial scalar power spectrum. We analyze the features of the power spectrum numerically and analytically, and then give a rough estimate of the lower and upper bound of the enhancement. These large perturbations also produce second order gravitational waves, which are in the scope of future observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_00510 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Inflation with shallow dip and primordial black holes Gu, Bao-Min Shu, Fu-Wen Yang, Ke Cosmology and Nongalactic Astrophysics Primordial black holes may arise through ultra slow-roll inflation. In this work we study a toy model of ultra slow-roll inflation with a shallow dip. The ultra slow-roll stage enhances the curvature perturbations and thus the primordial scalar power spectrum. We analyze the features of the power spectrum numerically and analytically, and then give a rough estimate of the lower and upper bound of the enhancement. These large perturbations also produce second order gravitational waves, which are in the scope of future observations. |
| title | Inflation with shallow dip and primordial black holes |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2307.00510 |