Método de extensão para modelos de três campos em mundos-brana.

Abstract

This work applies a new procedure to determine analytical hybrid braneworld models. It is constructed via three-field models coupled with gravity in a (4+1) dimensional space-time which in general is difficult to compute analytically. We apply the extension method to construct three-field models in braneworld scenarios. The fundamental idea of the method is to combine three-one field systems in a non-trivial way, to construct an effective three scalar field models. The underlying principle to the success of the method in this dissertation lies in the deformation method.