The extra scalar degrees of freedom from the two Higgs doublet model for dark energy

Abstract

In principle a minimal extension of the standard model of Particle Physics, the two Higgs doublet model, can be invoked to explain the scalar field responsible of 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 the dark energy candidate. The dark energy obtained from Higgs fields in this case is indistinguishable from the cosmological constant.

Comments: 20 pages, 4 figures, Presented at Fifth Italian-Pakistani Workshop on Relativistic Astrophysics