Speaker
Tommaso Sassi
(INFN Sezione di Firenze, Università degli Studi di Firenze)
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.
Authors
Dr
Alessandro Lenoci
(Hebrew University of Jerusalem)
Prof.
Francesco D'Eramo
(Università di Padova, INFN Padova)
Tommaso Sassi
(INFN Sezione di Firenze, Università degli Studi di Firenze)