# A new pressure-parametrization unified dark fluid model

## TL;DR

This paper introduces a novel pressure-parametrization unified dark fluid model to explain cosmic acceleration, reconstructs it with scalar fields, and uses recent data to constrain its parameters, supporting the Planck Hubble constant measurement.

## Contribution

It presents a new pressure-parametrization model for unified dark fluid and reconstructs it with scalar fields, providing observational constraints and comparison with standard cosmology.

## Key findings

- Supports the Planck Hubble constant value within 1σ confidence level.
- Provides constraints on the model parameters using recent cosmological data.
- Demonstrates the model's consistency with late-time cosmic acceleration.

## 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 $H_0=68.34^{+0.53}_{-0.92}$ supports the global measurement by the Planck satellite at the $1\sigma$ confidence level.