双重指数势的O(N)phantom宇宙动力学

Cosmological dynamics of O(N) phantom with double exponential potential

利用相空间方法研究了双重指数势下具有O(N)对称性的phantom宇宙学模型,指出在给定势的条件下允许存在big rip吸引子,但并不存在de Sitter吸引子.此外,通过数值分析,研究了这个模型的动力学演化.

We study the phantom model with O（N） symmetry in double exponential potential by the method of phase space. We show that the model admits big rip attractors in the condition of a given potential,but does not admit de Sitter attractors. Furthermore, the dynamical evolution of the model is studied numerically.