2007/01/31 by Ruth Lazkoz, Genly León, Israel Quirós +1 · 2 citations
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2007.03.060
published as Phys.Lett.B649:103-110,2007 · revtex4, 9 pages, 3 eps figures, Article in press at PLB
openalex publication_date 2007/04/12 · arxiv created 2007/04/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper we investigate quintom cosmologies with arbitrary potentials from the dynamical systems perspective. The dynamical systems analysis is complete in the sense that it includes the asymptotic regime where both scalar fields diverge, which proves to be particularly relevant in connection with the existence of tracking phases. The results of the present study indicate that the existence of phantom attractors is not generic: for quintom models there may exist either de Sitter attractors associated with the saddle points of the potential, or tracking attractors in the asymptotic regime where the scalar fields diverge.