http://arxiv.org/abs/2301.00599
A standard scenario to form primordial black holes in the early universe is based on a phase of ultra-slow-roll in single-field inflation when the amplitude of the short scale modes is enhanced compared to the CMB plateau. Based on general arguments, we show that the loop corrections to the large-scale linear power spectrum from the short modes are small and conclude that the scenario is not ruled out.
A. Riotto
Tue, 3 Jan 23
12/49
Comments: 9 pages, LaTeX file