A new interpretation of zero Lyapunov exponents in BKL time for Mixmaster cosmology  

作　　者：Xin Wu 

机构地区：[1]Department of Physics, Nanchang University, Nanchang 330031, China

出　　处：《Research in Astronomy and Astrophysics》2010年第3期211-219,共9页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.10873007);supported by the Science Foundation of Jiangxi Education Bureau(GJJ09072);the Program for Innovative Research Team of Nanchang University

摘　　要：A global relationship between cosmological time and Belinskii-Khalatnikov -Lifshitz （BKL） time during the entire evolution of the Mixmaster Bianchi IX universe is used to explain why all the Lyapunov exponents are zero at the BKL time. The actual reason is that the domain of the cosmological time is finite as the BKL time runs from minus infinity to infinity.A global relationship between cosmological time and Belinskii-Khalatnikov -Lifshitz （BKL） time during the entire evolution of the Mixmaster Bianchi IX universe is used to explain why all the Lyapunov exponents are zero at the BKL time. The actual reason is that the domain of the cosmological time is finite as the BKL time runs from minus infinity to infinity.

关 键 词：cosmology： early universe -- relativity 

分 类 号：O175.13[理学—数学] P159[理学—基础数学]