Phantom field with o(n) symmetry in an exponential potential

Mar, 2003
10 pages
Published in:
  • Phys.Rev.D 69 (2004) 107303
e-Print:

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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>3w>-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