Speaker
Lorenzo Ubaldi
(SISSA)
Description
A kinetic mixing between the axion and the inflaton allows for a production of axion dark matter even if the inflationary Hubble scale is smaller than the zero-temperature axion mass. I will discuss the axion dynamics in this "inflaxion" framework, and present a cosmological scenario where the axion can drift away from its vacuum during the reheating epoch, giving rise to the observed dark matter abundance.
Primary authors
Lorenzo Ubaldi
(SISSA)
Takeshi Kobayashi
