Speaker
Helena Kolesova
(University of Stavanger)
Description
A thermal plasma necessarily generates a spectrum of gravitational waves that is, however, too weak to be measurable unless the maximum temperature of the system is large. We present a mechanism ensuring a high dark-sector temperature as a result of reheating dynamics. As an example, we consider axion inflation coupled to a non-Abelian dark sector and we calculate the maximum temperature as a function of the confinement scale. We notice that additional gravitational wave signal can be obtained due to the confinement phase transition in the dark sector.
Primary author
Helena Kolesova
(University of Stavanger)
