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Primordial Black Hole Generation in a Two-field Inflationary Model

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arxiv 2112.07614 v1 pith:FZ2R5E7I submitted 2021-12-14 hep-th astro-ph.COhep-ph

Primordial Black Hole Generation in a Two-field Inflationary Model

classification hep-th astro-ph.COhep-ph
keywords blackgenerationinflationaryprimordialrollsolutionstwo-fieldbackground
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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