Speaker
Tommaso Sassi
(University of Padua, INFN Padua)
Description
Quantifying the imprints of freeze-in dark matter (DM) on cosmological structures requires the knowledge of its phase-space momentum distribution. We investigate how different cosmological histories before nucleosynthesis, what we refer to as “weather” of that epoch, give rise to distinct “seasons” in the DM momentum distribution that govern its warmness. Studying decay-driven production across diverse cosmological scenarios, we map how these conditions shape DM phase-space properties. Our study quantifies how the early universe composition plays a key role in determining the mass bound on freeze-in DM.
| Main Contribution topic | Light Dark Matter |
|---|---|
| Secondary contribution topic | Cosmology Dark Matter |
Author
Tommaso Sassi
(University of Padua, INFN Padua)