Observational Constraints on Nfields Phantom Power-Law

TL;DR

This paper analyzes a multi-scalar field model of dark energy with a power-law potential, constraining its parameters using observational data and examining its behavior near the Big Rip singularity.

Contribution

It provides an analytical study of multi-scalar field dynamics in dark energy models and compares theoretical predictions with observational constraints.

Findings

Dark energy EOS parameter remains finite at the Big Rip

Model parameters constrained by CMB, BAO, and H0 data

Divergence of pressure and density at the Big Rip

Abstract

We investigate the analytical behavior of many scalar fields working collectively, where {\phi} i is the ith scalar field. Furthermore, we evaluate its parameter values by applying certain constraints on our model parameters, and then compare these values with current observational data from Observational data of CMB, BAO and H 0 . Through our results, we deeply observe that in the dark-energy EOS parameter at the Big Rip always finite with the pressure and dark energy density divergence.