Speaker
Данила Филиппов
Description
The interaction of primordial plasma, exemplified by scalar particles and fermions, with a closed domain wall during the radiation-dominated stage of the Universe is considered. Possible forms of the interaction Lagrangian are analyzed. Various scenarios are presented, including both conventional scattering and the “locking” effect of gas inside the wall: when the particle temperature drops below a threshold value dependent on the potential parameters, the wall becomes opaque to the particles. This effect can lead to a significant time delay in the collapse of domain walls and the formation of primordial black holes.
Primary authors
Mr
Alexander Kirillov
(MEPhI)
Данила Филиппов
