Speaker
Aris Katsis
(Crete Center of Theoretical Physics)
Description
A series of turns in field space in models with two inflaton fields can produce a peak in the scalar power spectrum and thus lead to significant abundances of primordial black holes and secondary gravitational waves. An intuitive way to realize this scenario will be presented, based on [JCAP 06 (2025) 010] and [2602.04055 [astro-ph.CO]]. The enhancing mechanism can be very efficient even in its simplest form, without requiring heavily fine-tuned parameters, very sharp turns, or extra kinetic of field-space structure.
Author
Aris Katsis
(Crete Center of Theoretical Physics)
Co-authors
Dr
Ioannis Dalianis
(University of Cyprus)
Nikolaos Tetradis
(National and Kapodistrian University of Athens (GR))