Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-03-11
Phys.Rev. D69 (2004) 107303
Physics
High Energy Physics
High Energy Physics - Theory
5 pages, 3 figures, replaced with the version to appear on Phys. Rev. D
Scientific paper
10.1103/PhysRevD.69.107303
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.
Hao Jian-gang
Li Xin-zhou
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