摘要
研究了Cardassian宇宙的动力学.在物质优势时期,给出了几个典型模型的精确解.当同时考虑物质和辐射时,存在3个临界点,宇宙从辐射优势时期演化到Cardassian项优势时期.宇宙的命运将对应于3种吸引子:quintessence吸引子,big rip吸引子或者de Sitter吸引子.
In this paper, we investigate the cosmological dynamics of the Cardassian universe. We find exact solutions of some typical models for the matter dominated epoch. When both matter and radiation are included, there are three critical points and the universe evolves from the radiation dominated epoch to the Cardassian term dominated epoch. The fate of the universe corresponds to quintessence attractor, big rip attractor or de Sitter attractor.
出处
《上海师范大学学报（自然科学版）》
2008年第1期40-45,共6页
Journal of Shanghai Normal University(Natural Sciences)
基金
This work is supported by National Science Foundation of China under Grant(10473007)
Ph.D Foun-dation Grant of Chinese Education Ministry(20040270006)
