%0 Journal Article
%T Escaping problem in the Hénon-Heiles system and numerical algorithms<br>算法对混沌体系逃逸率的影响
%A Zhao Hai-Jun
%A Du Meng-Li
%A <br>赵海军
%A 杜孟利
%J 物理学报
%D 2007
%I 
%X We study the trajectories and escaping problem in the Henon-Heiles system using a new fourth order symplectic algorithm and the Runge-Kutta-Fehlberg algorithm. Starting from the same initial point, we found the distance between the two numerical trajectories calculated by the two algorithms increases exponentially in time in the chaotic region. We show this result can be used to measure chaos. We also calculate the escape rate as a function of energy above threshold in the Henon-Heiles system. The results calculated with two different algorithms agree very well.
%K escape rate
%K Henon-Heiles
%K symplectic algorithm<br>逃逸率
%K Hénon-Heiles体系
%K 辛算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=06F0EB4A849B7026&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=DF92D298D3FF1E6E&sid=34FA9FC2B94F663D&eid=711E311CFDAC37EE&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=14