Speaker
Helena Kolesova
(University of Stavanger)
Description
Taking axion inflation as an example, we study the evolution of a non-Abelian dark sector coupled to the inflaton for different choices of the confinement scale. For confinement scales just a few orders of magnitude below the Planck scale, large temperatures are reached in the dark sector and gravitational wave signal could be generated due to fluctuations in the thermal plasma. Another possible source of gravitational waves is the confinement phase transition; however, this signal might be strongly suppressed due to the presence of an early matter-dominated era.
Primary author
Helena Kolesova
(University of Stavanger)
