Speaker
Ioannis Dalianis
( NTU Athens)
Description
I will discuss the properties of the primordial power spectrum so that PBHs are produced in accordance with the constraints coming from the CMB and BBN observables. I will mainly focus on the large wavenumbers of the power spectrum where, if there is a peak, PBH with sub-solar masses are generated. Then I will describe the scenario that the dark matter in the universe is comprised either of PBHs or the evaporation remnants of PBHs. I will present inflationary models that can trigger the PBH formation in the framework of α-attractors, introducing also an explicit example, that of a runaway inflationary model.
