July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

Post-Inflationary Production Of Light Dark Sector

Jul 30, 2020, 9:00 AM
virtual conference

virtual conference

Talk 08. Astro-particle Physics and Cosmology Astro-particle Physics and Cosmology


Dr Anish Ghoshal (LNF-INFN & University Roma Tre)


Light dark sector particles, especially bosons if coupled to the inflaton can be copiously produced during the (p)reheating epoch courtesy to Bose enhancement. In many particle physics scenarios such light particles are often invoked to resolve tensions with cosmological bounds from Big Bang Nucleosynthesis (BBN), Cosmic Microwave Background (CMB) and Large Scale Structure (LSS). We will discuss two specific cases - one involving bosonic mediators with light sterile neutrinos invoked in context to several neutrino experimental anomalies and one in context to non-thermal production of dark matter. We will discuss the post-inflationary particle production in a large field inflationary model and highlight the region of the parameter space viable with early universe cosmology.

Secondary track (number) 03.

Primary author

Dr Anish Ghoshal (LNF-INFN & University Roma Tre)

Presentation materials