# FLRW accelerating universe with interactive dark energy

## TL;DR

This paper presents a cosmological model of the accelerating universe with interacting dark energy, exhibiting a transition from phantom to quintessence phases, consistent with observational data.

## Contribution

It introduces a hybrid expansion law-based model with interacting dark energy that captures the universe's transition from deceleration to acceleration.

## Key findings

- Transition redshift z_t = 0.956
- Model fits current observational constraints
- Universe phases: phantom and quintessence

## Abstract

We have developed an accelerating cosmological model for the present universe which is phantom for the period $ (0 \leq z \leq 1.99)$ and quintessence phase for $(1.99 \leq z \leq 2.0315)$. The universe is assumed to be filled with barotropic and dark energy(DE) perfect fluid in which DE interact with matter. For a deceleration parameter(DP) having decelerating-accelerating transition phase of universe, we assume hybrid expansion law for scale factor. The transition red shift for the model is obtained as $z_t = 0.956$. The model satisfies current observational constraints.