On the Quintessence with Abelian and Non-abelian Symmetry
arXiv:astro-ph/0308291 · doi:10.1142/S0217751X0301601X
Abstract
We study the perturbations on both "radial" and "angular" components of the quintessence with an internal abelian and non-abelian symmetry. The properties of the perturbation on the "radial" component depend on the specific potential of the model and is similiar for both abelian and non-abelian case. We show that the consine-type potential is very interesting for the O(\textit{N}) quintessence model and also give a critical condition of instability for the potential. While the properties of perturbations on "angular" components depend on whether the internal symmetry is abelian or non-abelian, which we have discussed respectively. In the non-abelian case, the fluctuation of the "angular" component will increase rapidly with time while in the abelian case it will not.
arXiv comment15 pages, to be published in Int. J. Mod. Phys. A
References in corpus (7)
- Cosmological Imprint of an Energy Component with General Equation of State
- Quintessence, Cosmic Coincidence, and the Cosmological Constant
- Cosmological Tracking Solutions
- Dynamical Lambda Models of Structure Formation
- Spintessence! New Models for Dark Matter and Dark Energy
- Can the quintessence be a complex scalar field?
- Extended Quintessence and its Late-time Domination