2,434 research outputs found
Noether symmetry of F(T) cosmology with quintessence and phantom scalar fields
In this paper, we investigate the Noether symmetries of cosmology
involving matter and dark energy. In this model, the dark energy is represented
by a canonical scalar field with a potential. Two special cases for dark energy
are considered including phantom energy and quintessence. We obtain and the scalar potential for both models of dark
energy and discuss quantum picture of this model. Some astrophysical
implications are also discussed.Comment: 15 pages,4 figure
Attractor Solutions in f(T) Cosmology
In this paper, we explore the cosmological implications of interacting dark
energy model in a torsion based gravity namely . Assuming dark energy
interacts with dark matter and radiation components, we examine the stability
of this model by choosing different forms of interaction terms. We consider
three different forms of dark energy: cosmological constant, quintessence and
phantom energy. We then obtain several attractor solutions for each dark energy
model interacting with other components. This model successfully explains the
coincidence problem via the interacting dark energy scenario.Comment: 10 pages, 23 figures, version accepted for publication in European
Physical Journal C (2012
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