Speaker
Description
Primordial black holes can be produced from the collapse of large perturbations generated from inflation on scales much smaller than those seeding large-scale structure formation. It is possible that the large peak in scalar power at high wavenumbers might induce corrections to the scalar power spectrum on large scales, e.g. in the form of loop corrections, endangering the success of inflation in explaining the observed statistics of primordial perturbations.
In this talk, I will give an update on recent debates on the viability of such inflationary scenarios. I will demonstrate that the 1-loop correction to a large-scale adiabatic mode due to a band of enhanced short-scale perturbations decouples from all detailed properties of the peak, including its maximum amplitude, and does not lead to an observable effect.