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Title: Stability and ergodicity of moon billiards
Authors: Correia, Maria de Fátima
Zhang, Hongkun
Keywords: Dynamical Systems
Billird Systems
Elliptic islands
Issue Date: Aug-2015
Publisher: Chaos
Citation: M. F. Correia and H. K. Zhang, Stability and ergodicity of moon billiards, Chaos 25, 083110 1-12 (2015) ISSN 1054-1500 
Abstract: We construct a two-parameter family of moon-shaped billiard tables with boundary made of two circular arcs. These tables fail the defocusing mechanism and other known mechanisms that guarantee ergodicity and hyperbolicity. We analytically study the stability of some periodic orbits and prove there is a class of billiards in this family with elliptic periodic orbits. These moon billiards can be viewed as generalization of annular billiards, which all have Kolmogorov-Arnold-Moser islands. However, the novelty of this paper is that by varying the parameters, we numerically observe a subclass of moon-shaped billiards with a single ergodic component.
Type: article
Appears in Collections:CIMA - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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