Crises de fronteira e estruturas complexas no espaço de parâmetros em um mapeamento dissipativo bidimensional

• Autor(a) principal: Francisco, Matheus Hansen [UNESP]
• Data de Publicação: 2013
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/119122
• topic: Dinâmica; Liapunov, Funções de; Dissipação de energia; Particulas; Ondas (Fisica); Campos eletricos

Some dynamical properties for a classical charged particle moving under by the influence of an electric field of wave packet are studied. The dynamics is described by the use of a two-dimensional and non-linear mapping with three relevant control parameters. The first controls the non-linearity of the model, second controls dissipation and the third one describes the transition from a relativistic to non relativistic. When dissipation is taken into account, we prove the existence of attractors of two types in the system: (i) sinks and; (ii) chaotic. We show that variation of control parameters may lead to a sudden destruction of a chaotic attractor. Such destruction is due to a boundary crisis. After that a chaotic attractor is replaced by a chaotic transient which is characterized by a power law of exponent −1. The parameter space is also investigated. We show the existence of complicated structures of shrimp-like form and give so far a clear evidence of a 3 − D shrimp in the parameter space