Bayesian comparison of interacting modified holographic Ricci dark energy scenarios

Abstract

We perform a Bayesian model selection analysis for interacting scenarios of dark matter and modified holographic Ricci dark energy (MHRDE) with linear interacting terms. We use a combination of some of the latest cosmological data such as type Ia supernovae, cosmic chronometers, the local value of the Hubble constant, baryon acoustic oscillations measurements and cosmic microwave background through the angular scale of the sound horizon at last scattering. We find moderate/strong evidence against all the MHRDE interacting scenarios studied with respect to $$\Lambda $$ Λ CDM when the full joint analysis is considered.

Modified holographic Ricci interacting dark energy models: dynamical system analysis and Bayesian comparison

“…For this scenario, the authors of Ref. [73] obtain a second-order differential equation by combining Eqs. ( 11)-( 13),…”

“…In Ref. [73], an interaction proportional to the dark components was studied, Γ = δρ c + γρ x , and no evidence supporting those MHR-IDE models was found when background data were used. In this work, we extend this analysis considering five new types of interactions, including an explicit change of sign in interaction Γ 5 .…”

“…For example, in Ref. [73], a Bayesian model selection of MHR-IDE models was performed with linear interaction. This work can be considered as an extension of Ref.…”

Holographic energy density, dark energy sound speed, and tensions in cosmological parameters: H0 and S8

“…In this work we want to determine whether or not HDE is viable given current astrophysical measurements. Although cosmological constraints have been computed for HDE models (see, for instance, [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68]), a few details have been overlooked. Firstly, while HDE models usually feature an evolving w de (a) which might cross the phantom divide w de = −1, this behaviour is not properly addressed in the literature when also considering the evolution of perturbations.…”

Dynamics and statefinder analysis of a class of sign-changeable interacting dark energy scenarios

“…Usually, we consider the standard cosmological scenario CDM, where the dark components evolve independently. A different approach is to consider that both components interact [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Interacting scenarios allow to alleviate the coincidence problem [4] and also are useful in addressing the tension in the H 0 parameter [18][19][20][21][22].…”