Cosmological perturbations in the Tsallis holographic dark energy scenarios

Abstract

We investigate the Tsallis holographic dark energy (THDE) models in the context of perturbations' growth. We assume the description of dark energy by considering the holographic principle and the nonadditive entropy to carry out this. We implement the perturbed relativistic equations to achieve the growth of matter fluctuations, being the growth rate of the cosmic structures is non-negligible at low redshifts. To constrain and compare the models, we carry out the Bayesian analysis using the recent geometrical and growth rate observational data. The main results are: (i) the models are compatible with cosmological observations, (ii) the cosmological constant recovered with a $1\sigma$ confidence level, furthermore (iii) they could cross the phantom barrier. Finally, the models can relieve $\approx 1\sigma$ the ${\sigma }_8$ tension in the non-clustered case and can alleviate in $\approx 2.8\sigma$ the $H_0$ tension. From the model selection viewpoint, the data discarded the THDE models.

13 pages, 5 figures, 4 tables. Updated to match the published version

References in corpus (10)

• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Bayes in the sky: Bayesian inference and model selection in cosmology
• Testing LCDM with the Growth Function δ(a): Current Constraints
• Modified cosmology from extended entropy with varying exponent
• Structure formation in the presence of dark energy perturbations
• Holographic dark energy from nonadditive entropy: cosmological perturbations and observational constraints
• The Viability of Phantom Dark Energy: A Brief Review
• Holography from quantum cosmology
• Entropic cosmology in a dissipative universe
• On the tension between growth rate and CMB data

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