Interacting quintessence cosmology from Noether symmetries: comparing theoretical predictions with observational data

Abstract

In the framework of scalar-tensor gravity, we consider non-flat interacting quintessence cosmology where a scalar field is interacting with dark matter. Such a scalar field can be a standard or a phantom one. We use the Noether Symmetry Approach to obtain general exact solutions for cosmological equations and to select scalar-field self-interaction potentials. It turns out that the found solutions can reproduce the accelerated expansion of the Universe, and are compatible with observational dataset, as the SNeIa Pantheon data, gamma ray bursts Hubble diagram, and direct measurements of the Hubble parameter.

30 pages, 7 figures, in press on: Phys.Dark Univ. (2023) 101274

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• Non-minimally coupled scalar field and scaling symmetry in a cosmological background