A new pressure-parametrization unified dark fluid model

Abstract

We propose a new pressure-parametrization model to explain the accelerated expansion of the late-time Universe by considering the dark contents (dark matter and dark energy) as a unified dark fluid. To realize this model more physically, we reconstruct it with the quintessence and phantom scalar fields, respectively. We use the recent cosmological data to constrain this model, distinguish it from the standard cosmological model and find that the value of the Hubble constant $H_0=68.34_{-0.92}^{+0.53}$ supports the global measurement by the Planck satellite at the $1\sigma$ confidence level.

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Cited by in corpus (12)

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• Constraining viscous dark energy models with the latest cosmological data
• No evidence for dynamical dark energy in two models
• A critical discussion on the $H_0$ tension
• First comprehensive constraints on the Finslerian models using cosmological observations
• Effects of a Late Gravitational Transition on Gravitational Waves and Anticipated Constraints
• Exploring the deviation of cosmological constant by a generalized pressure dark energy model
• A pressure parametric dark energy model
• A new pressure-parametric cosmological model
• Assessing the potential of cluster edges as a standard ruler
• Cosmic expansion history analysis with Hubble parametrization in $Q^n$ gravity