Consistency conditions and primordial black holes in single field inflation

0567324 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Özsoy, Ogan - Tasinato, G.
Consistency conditions and primordial black holes in single field inflation.
Physical Review D. Roč. 105, č. 2 (2022), č. článku 023524. ISSN 2470-0010. E-ISSN 2470-0029
Grant CEP: GA MŠMT EF15_003/0000437
Grant ostatní: OP VVV - CoGraDS(XE) CZ.02.1.01/0.0/0.0/15_003/0000437
Institucionální podpora: RVO:68378271
Klíčová slova: dip * collapse * correlation function * formation
Obor OECD: Particles and field physics
Impakt faktor: 5, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevD.105.023524

We discuss new consistency relations for single field models of inflation capable of generating primordial black holes (PBH), and their observational implications for CMB μ-space distortions. These inflationary models include a short period of nonattractor evolution, the scale-dependent profile of curvature perturbation is characterized by a pronounced dip, followed by a rapid growth leading to a peak responsible for PBH formation. We investigate the squeezed and the collapsed limits of three- and four-point functions of curvature perturbation around the dip, showing that they satisfy consistency relations connecting their values to the total amplification of the curvature spectrum, and to the duration of the nonattractor era.
Trvalý link: https://hdl.handle.net/11104/0338587