Dokumentdetails
ID
oai:arXiv.org:2408.12587
Thema
Astrophysics - Cosmology and Nonga... High Energy Physics - Phenomenolog...Autor
Autieri, Gabriele Redi, MicheleKategorie
Wissenschaften: Astrophysik
Jahr
2024
Auflistungsdatum
28.08.2024
Schlüsselwörter
roll slowZusammenfassung
We present new single field inflationary scenarios that produce the critical abundance of primordial black holes as dark matter reconstructing the inflaton potential from an input power spectrum.
The method is exact in the slow roll approximation but remains effective even when the slow roll conditions are temporarily violated such as in ultra slow roll models.
With this method we construct new ultra slow roll scenarios and also models that reproduce the DM abundance within the slow roll regime.
As a second application we consider a scalar power spectrum that generates a secondary gravitational wave background compatible with the one recently observed in Pulsar Timing Arrays experiments.
These scenarios could be tested by future observations of $\mu-$distortions of the CMB.
;Comment: 18 pages, 9 figures
Autieri, Gabriele,Redi, Michele, 2024, Reconstructing the Inflaton Potential: Primordial Black Holes and Gravitational Waves in Slow Roll and Ultra Slow Roll Single Field Inflation
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