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arxiv: 1403.1103 · v1 · pith:QZMQNUSCnew · submitted 2014-03-05 · 🌌 astro-ph.CO · gr-qc· hep-th

Cosmology with Ricci-type dark energy

W. Zimdahl , J.C. Fabris , S. del Campo , R. Herrera This is my paper
classification 🌌 astro-ph.CO gr-qchep-th
keywords darkenergymattermodellambdaomegaparameterbackground
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We consider the dynamics of a cosmological substratum of pressureless matter and holographic dark energy with a cutoff length proportional to the Ricci scale. Stability requirements for the matter perturbations are shown to single out a model with a fixed relation between the present matter fraction $\Omega_{m0}$ and the present value $\omega_{0}$ of the equation-of-state parameter of the dark energy. This model has the same number of free parameters as the $\Lambda$CDM model but it has no $\Lambda$CDM limit. We discuss the consistency between background observations and the mentioned stability-guaranteeing parameter combination.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Ricci cosmology

    gr-qc 2019-07 unverdicted novelty 6.0

    Ricci cosmology adds curvature-matter coupling terms to the stress-energy tensor, enabling analytic inflationary solutions in standard flat FLRW cosmology without Lambda or new scalar fields.