A NUMERICAL-ANALYSIS OF CHAOTIC BEHAVIOR IN BIANCHI IX MODELS

被引:53
作者
BURD, AB [1 ]
BURIC, N [1 ]
ELLIS, GFR [1 ]
机构
[1] SCUOLA INT SUPER STUDI AVANZATI,I-34014 TRIESTE,ITALY
关键词
D O I
10.1007/BF00756280
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper we investigate the chaotic behaviour of the Bianchi IX cosmological models using techniques developed in the study of dynamical systems and chaotic behaviour. We numerically calculate the Lyapunov exponent, λ, and show that instead of converging to a constant value, it decreases steadily. We study this effect further by studying the Lyapunov exponent using short-time averages. We show that the usual method of calculating λ is invalid in the case of a cosmological model. © 1990 Plenum Publishing Corporation.
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页码:349 / 363
页数:15
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