The extra scalar degrees of freedom from the two-Higgs doublet model for dark energy
The extra scalar degrees of freedom from the two-Higgs doublet model for dark energy
In principle, a minimal extension of the standard model of Particle Physics, the two-Higgs doublet model (2HDM), can be invoked to explain the scalar field responsible for dark energy. The two doublets are in general mixed. After diagonalization, the lightest CP-even Higgs and CP-odd Higgs are jointly taken to be …