Primordial Black Hole Generation in a Two-field Inflationary Model

Abstract

We summarize our work on the generation of primordial black holes in a type of two-field inflationary models. The key ingredient is a sharp turn of the background trajectory in field space. We show that certain classes of solutions to the equations of motion exhibit precisely this kind of behavior. Among them we find solutions, which describe a transition between an ultra-slow roll and a slow roll phases of inflation.

Comments: 10 pages, contribution to the proceedings of the 14th international workshop "Lie Theory and its Applications in Physics", June 2021