The inflation trilogy and primordial black holes Ferraz, Paulo B. Rosa, João G. Inflation Physics of the early universe Primordial black holes We propose an inflation scenario with three independent stages of cold, warm and thermal inflation, respectively, driven by different scalar fields, motivated by the large number of such fields predicted in most extensions of the Standard Model. We show, in particular, that the intermediate period of warm inflation naturally leads to large density fluctuations on small scales, which can lead to primordial black hole formation in the mass window where they may account for all dark matter. This type of scenario yields a distinctive primordial black hole mass function with a mass gap, with the final period of thermal inflation diluting the abundance of very light black holes. 2025-04-07T10:05:00Z 2025-04-07T10:05:00Z 2025-03-20 journal article Paulo B. Ferraz and João G. Rosa JCAP03(2025)040 [DOI 10.1088/1475-7516/2025/03/040] https://hdl.handle.net/10481/103488 10.1088/1475-7516/2025/03/040 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional IOP Publishing