Comparison of dark energy models after Planck 2015

Abstract

We make a comparison for ten typical, popular dark energy models according to their capabilities of fitting the current observational data. The observational data we use in this work include the JLA sample of type Ia supernovae observation, the Planck 2015 distance priors of cosmic microwave background observation, the baryon acoustic oscillations measurements, and the direct measurement of the Hubble constant. Since the models have different numbers of parameters, in order to make a fair comparison, we employ the Akaike and Bayesian information criteria to assess the worth of the models. The analysis results show that, according to the capability of explaining observations, the cosmological constant model is still the best one among all the dark energy models. The generalized Chaplygin gas model, the constant $w$ model, and the $\alpha$ dark energy model are worse than the cosmological constant model, but still are good models compared to others. The holographic dark energy model, the new generalized Chaplygin gas model, and the Chevalliear-Polarski-Linder model can still fit the current observations well, but from an economically feasible perspective, they are not so good. The new agegraphic dark energy model, the Dvali-Gabadadze-Porrati model, and the Ricci dark energy model are excluded by the current observations.

16 pages, 11 figures; accepted for publication in the European Physical Journal C

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• No evidence for the evolution of mass density power-law index $\gamma$ from strong gravitational lensing observation
• Whether Lyra's Manifold Itself is a Hidden Source of Dark Energy
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• Stability analysis of two-fluid dark energy models
• Investigating the $w$CDM Model with Latest DESI BAO Observations
• Beyond $\Lambda$CDM: Exploring a Dynamical Cosmological Constant Framework Consistent with Late-Time Observations
• Redshift evolution of the Hubble constant: Constraints and new insights from an interacting dark energy model
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• Hamilton-Jacobi formalism for Generalized Chaplygin Gas models
• Cosmological Constraints on the DGP Model in light of DESI DR2 2025 Data