Cosmological evolution of a quintom model of dark energy

2004/10/27 by Zong-Kuan Guo, Zong‐Kuan Guo, Yun-Song Piao +3 · 12 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Relativity and Gravitational Theory #astro-ph

paper · pdf · doi:10.1016/j.physletb.2005.01.017

published as Phys.Lett. B608 (2005) 177-182 · 9 pages, 3 figures, LaTeX2e

arxiv created 2004/10/27 · openalex publication_date 2005/01/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate in this paper the cosmological evolution of a dark energy model with two scalar fields where one of the scalar has canonical kinetic energy and another scalar has negative kinetic energy term. For such a system with exponential potentials we find that during the evolution of the universe the equation of state w changes from w>-1 to w<-1, which is consistent with the recent observations. A phase-plane analysis shows that the "phantom"-dominated scaling solution is the stable late-time attractor of this type of models.

Citations

• Cosmological scaling solutions and cross-coupling exponential potential
• Cosmological scaling solutions of multiple tachyon fields with inverse square potentials
• Cosmological consequences of a rolling homogeneous scalar field

Cited by

• Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
• Cosmological constraints on nonphantom dynamical dark energy with DESI Data Release 2 Baryon Acoustic Oscillations: A 3σ+ lensing anomaly
• Coupled non-canonical scalar field to neutrinos could alleviate the Hubble tension and cross the phantom barrier
• Agegraphic dark energy from entropy of the anti-de Sitter black hole
• Chaplygin and Polytropic gases Teleparallel Robertson-Walker F(T) gravity solutions
• Quintessential dark energy crossing the phantom divide
• Lensing amplitude anomaly and varying electron mass alleviate the Hubble and S₈ tensions
• Resolving the Planck-DESI tension by non-minimally coupled quintessence
• Slow-Fast Evolution of Scalar Fields in Higher-Order Cosmological Gravity: Dynamics Inspired by the Pais--Uhlenbeck Oscillator
• Testing signatures of phantom crossing through full-shape galaxy clustering analysis
• Topological defects as effective dynamical dark energy
• Implications of DESI for Dark Matter & Cosmic Birefringence

Related

• The Quintom Model of Dark Energy
• The Quintom theory of dark energy after DESI DR2
• A multifield tachyon quintom model of dark energy and fate of the\n universe
• Quintom phase-space: beyond the exponential potential
• Dynamical Stability of the Power Law K-essence Dark Energy Model with a New Interaction