Phase transitions in the early universe

Electroweak baryogenesis (EWBG) provides a viable mechanism to generate the observed matter-antimatter asymmetry. However, in the Standard Model (SM) the electroweak phase transition is too weak for EWBG to be viable. In extended models the transition can be strong enough for EWBG to work.  An inevitable consequence of phase transition in the very early universe are topological defects whose dynamics is important to understand the fate of the universe. Especially cosmic strings and textures are important since, among their other consequences, they may act as “seeds” for the formation of large-scale structures and are therefore also  tied to models of inflation. The research carried out in group addresses mechanisms of baryogenesis in general, EWBG in particular, and topological defects in the early universe.

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