Primordial Black Holes from Metric Preheating
Early November, we released on arxiv a paper together with V. Vincent in which we calculate the production of Primordial Black Holes after inflation, during the so-called preheating instability.
If you are unfamiliar with the subject, I have been invited to present the paper at the "Instituto de Física Teórica, Universidad Autónoma de Madrid" on the exact same day. The presentation has been recorded and is now on Youtube for you to see. You may also find the slides I used for this presentation here.