A general parametric model for the dynamic dark energy

Abstract

In the present work we suggest new and more generalized parameterizations for the Equation of State, EoS, of dark energy, maintaining the basic structure of two-parameters CPL-model, but covering both the past and the future of the cosmic history, without divergences and consistently with the current observational data. We propose two generalizations, starting from the extended MZp-model by Ma and Zhang, 2011, the $\xi$MZp-model and the DFp-model. The potential advantages of using these new formulations is their extended range of validity, mainly in the future, to determine possible future scenarios of the cosmic evolution.

9 pages

References in corpus (3)

• Observational Probes of Cosmic Acceleration
• Cosmological parameters constraints from galaxy cluster mass function measurements in combination with other cosmological data
• Improving Dark Energy Constraints with High Redshift Type Ia Supernovae from CANDELS and CLASH

Cited by in corpus (3)

• A Comparison of Thawing and Freezing Dark Energy Parametrizations
• Barotropic fluid compatible parametrizations of dark energy
• A preference for dynamical phantom dark energy using one-parameter model with Planck, DESI DR1 BAO and SN data