Speaker
Mikko Laine
Description
The late stage of the reheating process may be captured by a two-component approach, in which a self-interacting plasma has already attained local equilibrium, while the inflaton field is still far from equilibrium. This should be particularly suitable if the plasma contains non-Abelian gauge bosons, which are believed to equilibrate fast. We describe the foundations of such an approach, which can in principle be studied both in a linear and non-linear regime. Recent progress towards a gauge-invariant numerical implementation of the linear regime is summarized, and steps towards determining the curvature and tensor power spectra are outlined.
Primary author
Mikko Laine
Co-authors
Simona Procacci
Alica Rogelj
