Interacting Dark Energy in the Dark SU(2) R Model

2017/11/30 by Ricardo G. Landim, Rafael J. F. Marcondes, Fabrízio F. Bernardi +1
Physics and Astronomy · #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Hot dark matter #Hubble's law #Lambda-CDM model #Particle physics theoretical and experimental studies #Scalar field dark matter #astro-ph.CO #hep-ph

paper · pdf · doi:10.1007/s13538-018-0572-x

published as Braz J Phys (2018) 48: 364 · 7 pages, 1 figure, version accepted in Braz. J Phys

openalex created_date 2017/12/04 · arxiv created 2018/05/13 · openalex publication_date 2018/05/21 · arxiv updated 2018/07/02 · openalex updated_date 2026/08/05

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 ΛCDM 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 ΛCDM 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.

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