A note on interacting holographic dark energy with a Hubble-scale cutoff

Abstract

Holographic dark energy with the Hubble radius as infrared cutoff has been considered as a candidate to explain the late-time cosmic acceleration and it can solve the coincidence problem. In this scenario, a non-zero equation of state is only possible if there is an interaction between dark energy and cold dark matter. In this paper, a set of phenomenological interactions is assumed and a detailed analysis of the possible values of the coupling constants is carried out, however the resulting matter power spectrum and cosmic microwave background temperature and polarization power spectra have a shape very far from the observed ones. These results rule out any value for the free parameters and it seems to indicate that the assumed interacting holographic dark energy with a Hubble-scale cutoff is not viable to explain the accelerated expansion of the Universe, when cosmological data are taken into account.

8 pages, 4 figures. References added, typos corrected. Version accepted for publication in PRD

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Cited by in corpus (6)

• Barrow holographic dark energy in the Brans-Dicke cosmology
• On the dynamics of a dark sector coupling
• Holographic dark energy from the laws of thermodynamics with Rényi entropy
• Estimated Age of the Universe in Fractional Cosmology
• Constraints on interacting dark energy revisited: implications for the Hubble tension
• Some Classes of Interacting Two-Fluid Model of the Expanding Universe