2 research outputs found
Attractor Solution in Coupled Yang-Mills Field Dark Energy Models
We investigate the attractor solution in the coupled Yang-Mills field dark
energy models with the general interaction term, and obtain the constraint
equations for the interaction if the attractor solution exists. The research
also shows that, if the attractor solution exists, the equation-of-state of the
dark energy must evolve from to , which is slightly suggested
by the observation. At the same time, the total equation-of-state in the
attractor solution is , the universe is a de Sitter expansion, and
the cosmic big rip is naturally avoided. These features are all independent of
the interacting forms.Comment: 6 pages, no figure. version for publication. IJMPD accepte
Dynamics of the self-interacting chameleon cosmology
In this article we study the properties of the flat FRW chameleon cosmology
in which the cosmic expansion of the Universe is affected by the chameleon
field and dark energy. In particular, we perform a detailed examination of the
model in the light of numerical analysis. The results illustrate that the
interacting chameleon filed plays an important role in late time universe
acceleration and phantom crossing.Comment: 13 pages, 8 figures, to appear in Astrophysics and Space Sc