Phantom field with o(n) symmetry in an exponential potential
Mar, 2003Citations per year
Abstract:
In this paper, we study the phase space of phantom model with O(\emph{N}) symmetry in exponential potential. Different from the model without O(\emph{N}) symmetry, the introduction of the symmetry leads to a lower bound w>−3 on the equation of state for the existence of stable phantom dominated attractor phase. The reconstruction relation between the potential of O(\textit{N}) phantom system and red shift has been derived.- 98.80.Cq
- field theory: scalar
- symmetry: O(N)
- space-time: Robertson-Walker
- potential
- chaos
- group theory: representation
- attractor
- field theory: phantom
- stability
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