Quintom cosmologies with arbitrary potentials

Lazkoz, Ruth; Leon, Genly; Quiros, Israel


In this Letter 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. (c) 2007 Elsevier B.V. All rights reserved.

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Título según WOS: ID WOS:000247170700001 Not found in local WOS DB
Título de la Revista: PHYSICS LETTERS B
Volumen: 649
Número: 2-3
Editorial: Elsevier
Fecha de publicación: 2007
Página de inicio: 103
Página final: 110


Notas: ISI