Holographic dark energy model from Ricci scalar curvature
TLDR
In this article, the authors proposed to replace the future event horizon area with the inverse of the Ricci scalar curvature, which is phenomenologically viable and naturally solves the coincidence problem of dark energy.Abstract:
Motivated by the holographic principle, it has been suggested that the dark energy density may be inversely proportional to the area of the event horizon of the Universe. However, such a model would have a causality problem. In this paper, we propose to replace the future event horizon area with the inverse of the Ricci scalar curvature. We show that this model does not only avoid the causality problem and is phenomenologically viable, but also naturally solves the coincidence problem of dark energy. Our analysis of the evolution of density perturbations show that the matter power spectra and cosmic microwave background temperature anisotropy is only slightly affected by such modification.read more
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Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
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Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
TL;DR: In this article, a review of different dark energy cosmologies is presented, including the Lambda$CDM cosmology, Little Rip and Pseudo-Rip universes, the phantom and quintessence cosmology with Type I, II, III and IV finite-time future singularities and non-singular dark energy universes.
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Holographic dark energy models: a comparison from the latest observational data
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