Interacting dark energy in the dark $SU(2{)}_R$ model

Abstract

We explore the cosmological implications of the interactions among the dark particles in the dark $SU(2{)}_R$ model. It turns out that the relevant interaction is between dark energy and dark matter, through a decay process. With respect to the standard $\Lambda$CDM model, it changes only the background equations. We note that the observational aspects of the model are dominated by degeneracies between the parameters that describe the process. Thus, only the usual $\Lambda$CDM parameters, such as the Hubble expansion rate and the dark energy density parameter (interpreted as the combination of the densities of the dark energy doublet) could be constrained by observations at this moment.

7 pages, 1 figure, version accepted in Braz. J Phys

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Cited by in corpus (8)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Exploring neutrino mass and mass hierarchy in interacting dark energy models
• Fractional dark energy
• The BINGO Project VII: Cosmological Forecasts from 21cm Intensity Mapping
• A note on interacting holographic dark energy with a Hubble-scale cutoff
• Constraints on interacting dark energy revisited: implications for the Hubble tension
• I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Constraints on Metastable Dark Energy Decaying into Dark Matter