Quintessence and scalar dark matter in the Universe

Abstract

Continuing on from previous works, we present a cosmological model inwhichdark matter and dark energy are modelled by scalar fields Φ and Ψ, respectively, endowed with the scalar potentials V(Φ) = Vo[cosh (λ√κoΦ) - 1] and(Ψ) = o[sinh (α√κoΨ)]β. This model contains a 95% scalar field. We obtain that thescalar dark matter mass is mΦ~10-26 eV. The solution obtained allows us to recover the success of standard cold dark matter. The implications on the formation of structure are reviewed. We obtain that the minimal cut-off radio for this model is rc ~ 1.2 kpc.