Unified dark matter and dark energy description in a chiral cosmological model

Abstract

We show the way of dark matter and dark energy presentation via ansatzs on the kinetic energies of the fields in the two-component chiral cosmological model. To connect a kinetic interaction of dark matter and dark energy with observational data the reconstruction procedure for the chiral metric component $h_{22}$ and the potential of (self)interaction $V$ has been developed. The reconstruction of $h_{22}$ and $V$ for the early and later inflation have been performed. The proposed model is confronted to $\Lambda CDM$ model as well.

arXiv comment19 pages, 7 figures

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• Classical transitions with the topological number changing in the early Universe
• An Emergent Universe supported by chiral cosmological fields in Einstein--Gauss--Bonnet gravity
• Transitions between topologically non-trivial configurations
• Anisotropic chiral cosmology: exact solutions
• New Exact Solutions for a Chiral Cosmological Model in 5D EGB Gravity
• $\sigma$CDM coupled to radiation. Dark energy and Universe acceleration
• Anisotropic Spacetimes in Chiral Scalar Field Cosmology