Using integrability to produce chaos: Billiards with positive entropy

Using integrability to produce chaos: Billiards with positive entropy
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利用可积性产生混沌:正熵台球

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发表时间:
1991
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通讯作者:
V. Donnay
V. Donnay
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文献类型:
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作者:
V. Donnay

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构造了一类新的几乎处处具有正李雅普诺夫指数的凸二维平面台球。我们介绍了一个聚焦弧的概念,并表明,这样的弧可以用来建立台球系统的正李雅普诺夫指数。我们证明了在smallC6扰动下,聚焦弧保持聚焦,从而表明Bunimovich体育场台球的扰动具有正的Lyapunov指数。
A new open class of convex 2 dimensional planar billiards with positive Lyapunov exponent almost everywhere is constructed. We introduce the notion of a focusing arc and show that such arcs can be used to build billiard systems with positive Lyapunov exponents. We prove that under smallC6 perturbations, focusing arcs remain focusing and thereby show that perturbations of the Bunimovich stadium billiard have positive Lyapunov exponents.