Poincarè Chaos and the Dynamical Evolution of Systems of Gravitating Bodies

被引：0
作者：
A. D. Chernin
M. Valtonen
L. P. Ossipkov
Q.-J. Zheng
S. Wiren
机构：
[1] P. K. Shternberg State Astronomical Institute,Tuorla Observatory
[2] University of Turku,undefined
[3] St. Petersburg State University,undefined
来源：
Astrophysics | 2002年 / 45卷
关键词：
cosmology; chaos; gravitation; evolution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Some general laws of evolution of a system of a large number of gravitating bodies are discussed. If in the initial stage the dynamics of the system is determined by large-scale perturbations of the gravitational potential associated with excitations of a few collective degrees of freedom, then one can assume, by analogy with chaos in the several-body problem (Poincarè chaos), that randomization will occur in the system over several average crossing times. In the next stage of evolution, the energy of collective modes should be transferred by the cascade mechanism to ever smaller scales, down to invididual particles. Numerical experiments and gross-dynamical considerations that could verify this picture and bring out details are discussed.
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页码：240 / 247
页数：7
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