Cosmological perturbations in the Tsallis holographic dark energy scenarios

Understand

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.