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

We explore the cosmological implications of the interactions among the dark particles in the dark S U (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 equat...

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Bibliographic Details
Published in:Brazilian journal of physics 2018-08, Vol.48 (4), p.364-369
Main Authors: Landim, Ricardo G., Marcondes, Rafael J. F., Bernardi, Fabrízio F., Abdalla, Elcio
Format: Article
Language:English
Subjects:
Particles and Fields
Physics
Physics and Astronomy
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Summary:We explore the cosmological implications of the interactions among the dark particles in the dark S U (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 Λ 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.
ISSN:0103-9733
1678-4448
DOI:10.1007/s13538-018-0572-x