Impact of a complex singlet: From dark matter to baryogenesis

Understand

With the assistance of a complex singlet, and an effective operator involving CP violations, the dark matter relic abundance and baryon asymmetry of the universe have been addressed simul- taneously.

• We studied the electroweak baryogenesis mechanism systematically.
• The electroweak phase transition analysis indicates that the strong first order phase transition takes place by one- step or two-step type due to the dynamics of the energy gap between the electroweak vacuum and the vacuum of the complex singlet.
• The relation between the magnitude of baryon asymmetry of the universe and the phase transition type and strength has been explored in the framework of electroweak baryogenesis.