Holographic dark energy model from Ricci scalar curvature

By Changjun Gao, Fengquan Wu, Xuelei Chen, You-gen Shen. 2007

405 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/8314158fb21fc4ecbd5bbc99b44815eeda33ed8b

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In Astronomy and Astrophysics

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Citations in the corpus

Holographic dark energy (2016, methodology): “niverse is the curvature of spacetime. The scalar quantity built from the spacetime curvature, the Ricci scalar, is thus a good candidate for a covariant choice of IR cuto Nojiri and Odintsov (2006); Gao et al. (2009); Zhang (2009). In FRW cosmology, the Ricci scalar takes the form R= 6 H_ + 2H2 + ”