Speaker
Mohamed Younes Sassi
(2.Institute for theoretical Physics Hamburg)
Description
Domain walls are a type of topological defects that can arise in the
early universe after the spontaneous breaking of a discrete symmetry. This occurs in several beyond Standard Model theories with an
extended Higgs sector such as the Next-to-Two-Higgs-Doublet model
(N2HDM). In this talk I will discuss the domain wall solution related
to the singlet scalar of the N2HDM as well as demonstrate the possibility of restoring the electroweak symmetry in the vicinity of the
domain wall. Such symmetry restoration can have profound implications on the early universe cosmology as the sphaleron rate inside the
domain wall would, in principle, be unsuppressed compared with the
rate outside the wall.
Author
Mohamed Younes Sassi
(2.Institute for theoretical Physics Hamburg)
Co-author
Prof.
Gudrid Moortgat-Pick
