Quintom Cosmology with General Potentials

TL;DR

This paper analyzes the dynamical behavior of quintom cosmology models with general potentials, revealing differences from single phantom models in late-time dark energy evolution.

Contribution

It provides a phase-space analysis of quintom models with arbitrary potentials, highlighting their unique late-time cosmological behaviors.

Findings

Distinct phase-space structures for quintom models.

Qualitative differences from single phantom models.

Insights into late-time dark energy dynamics.

Abstract

We investigate the phase-space structure of the quintom paradigm in the framework of a spatially flat, open, or closed isotropic and homogeneous universe. We examine the dynamical evolution under the assumption of late-time dark energy domination, without specifying the explicit quintom potential form. The obtained cosmological behavior is qualitatively different than that acquired from the single phantom model.