DESY Theory Seminar

Dissipation in QFT and the Hot Big Bang

by Marco Drewes (U Louvain)

Monday, November 4, 2019 from to (Europe/Berlin)
at Bldg 2A ( SR2 )
We explore the role of thermal and quantum corrections to the effective potential and dissipation coefficients of scalar fields in a thermal bath in the perturbative regime. One motivation for this is the question whether dissipative effects can play a role during inflation, in particular in so-called warm inflation scenarios. A second motivation is a better understanding of cosmic reheating after inflation. As an application we discuss the possibility to constrain the inflaton coupling from cosmological data.