Dilatonic Scalar Field: A Dynamical System Analysis

TL;DR

This paper analyzes a cosmological model with a dilatonic scalar field as dark energy, using dynamical systems methods to understand its stability and implications for universe evolution.

Contribution

It introduces a phase space analysis of a flat FRW universe with dilatonic scalar field dark energy, providing new insights into stability and cosmological behavior.

Findings

Identification of critical points and their stability conditions

Implications for universe's accelerated expansion

Insights into dark energy dynamics

Abstract

The work deals with homogeneous and isotropic, flat FRW model of the universe which is filled up with non-interacting dark matter and dark energy to compatible with recent observational evidences. By choosing the dark energy in the form of a dilatonic scalar field, the evolution equations are reduced to an autonomous system. A phase space analysis is done around the critical points and stability criteria is examined. Finally, cosmological implications of the nature of the critical points are discussed.