Towards thermal evolution of the most general 2HDM

Abstract

We consider the scalar sector of the most general renormalizable two-Higgs-doublet model at non-zero temperature. We calculate the largest finite temperature corrections to the free-energy density and study thermal evolution of the ground state. Within the approximation chosen, we establish all possible sequences of thermal phase transitions and study their relation with the symmetries of the model. We show, in particular, that a charge-breaking or a CP-violating vacuum can arise at intermediate stages of thermal evolution, and that the first-order phase transition is associated with a discrete symmetry of the potential, but not of the entire scalar lagrangian.

16 pages, 2 figures; v2: introduction rewritten, references and clarifications added; matches the published version

References in corpus (2)

• Generalized CP symmetries and special regions of parameter space in the two-Higgs-doublet model
• Necessity of mixed kinetic term in the description of general system with identical fields

Cited by in corpus (6)

• Building and testing models with extended Higgs sectors
• Evolution of Universe to the present inert phase
• Full parameter scan of the Zee model: exploring Higgs lepton flavor violation
• The evolution of vacuum states and phase transitions in 2HDM during cooling of Universe
• Dark Matter data and constraints on quartic couplings in IDM
• Temperature evolution of physical parameters in the Inert Doublet Model