Quintom cosmologies admitting either tracking or phantom attractors

By Ruth Lazkoz, Genly Le'on. 2006

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Abstract In this Letter we investigate the evolution of a class of cosmologies fueled by quintom dark energy and dark matter. Quintom dark energy is a hybrid of quintessence and phantom which involves the participation of two real scalar fields playing the roles of those two types of dark energy. In that framework we examine, from a dynamical systems perspective, the possibility that those fields are coupled among them by considering an exponential potential with an interesting functional dependence similar but not identical to others studied before. The model we consider represents a counterexample to the typical behavior of quintom models with exponential potentials because it admits either tracking attractors ( w = 0 ), or phantom attractors ( w − 1 ).

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1a9e2ff38765447dba42fc0b81ffce024b7eb319

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Dynamical systems applied to cosmology: Dark energy and modified gravity (2017, methodology): “(5.38) Using a dynamical systems approach, Lazkoz & Leon (2006) obtained tracking, phantom and quintessence solutions.”