具有聚焦边界的弹球台球系统中周期和混沌吸引子的分岔
Bifurcations of periodic and chaotic attractors in pinball billiards with focusing boundaries
摘要：
我们研究了台球模型的动力学与修改的碰撞规则：从碰撞传出的角度是一个统一的收缩，由一个因子λ，入射角。这些弹球台球插入之间的一维映射时，λ =0和经典的弹性碰撞的哈密顿情况下，λ =1。对于所有λ <1，动力学是耗散的，因此会产生吸引子，吸引子可能是周期性的或混沌的。受最近Markarian，Pujals和Sambarino的严格结果的启发，我们数值研究并证明了当收缩参数变化时所产生的吸引子的分叉。有些台球只表现出周期吸引子，有些只表现出混沌吸引子，还有一些台球则是两种吸引子共存。
英文摘要：
We study the dynamics of billiard models with a modified collision rule: the outgoing angle from a collision is a uniform contraction, by a factor lambda, of the incident angle. These pinball billiards interpolate between a one-dimensional map when lambda=0 and the classical Hamiltonian case of elastic collisions when lambda=1. For all lambda<1, the dynamics is dissipative, and thus gives rise to attractors, which may be periodic or chaotic. Motivated by recent rigorous results of Markarian, Pujals and Sambarino, we numerically investigate and characterise the bifurcations of the resulting attractors as the contraction parameter is varied. Some billiards exhibit only periodic attractors, some only chaotic attractors, and others have coexistence of the two types.
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