Dark Sector from Interacting Canonical and Non-Canonical Scalar Fields

Abstract

In this work it is investigated general models with interactions between two canonical scalar fields and between one non-canonical (tachyon-type) and one canonical scalar field. The potentials and couplings to the gravity are selected through the Noether symmetry approach. These general models are employed to describe interactions between dark energy and dark matter, with the fields being constrained by the astronomical data. The cosmological solutions of some cases are compared with the observed evolution of the late Universe.

20 pages, 13 figures, correction of misprints in eqs. (4), (5), (43), (44)

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Cited by in corpus (8)

• Interacting Dark Energy -- constraints and degeneracies
• Cosmological constraints on interacting dark energy with redshift-space distortion after Planck data
• Distinguishing interacting dark energy from wCDM with CMB, lensing, and baryon acoustic oscillation data
• Cosmological model with fermion and tachyon fields interacting via Yukawa-type potential
• Fermion field as inflaton, dark energy and dark matter
• Analysis of the non-minimally coupled scalar field in the Palatini formalism by the Noether symmetry approach
• Cosmological Solutions for the Geometrical Scalar-Tensor with the Potential Determined by the Noether Symmetry Approach
• Conformal coupling associated with the Noether symmetry and its connection with the $\Lambda$CDM dynamics