Cenários cosmológicos na presença de redes de defeitos.

Abstract

In this paper we deal with solutions of domain walls in models of coupled real scalar fields involving Z2×Z3 symmetry in a non-supersymmetric model. We will look essentially topological defects that arise naturally due to spontaneous symmetry breaking typically present in several models such as the standard model of elementary interactions. It is assumed that these interactions are unified in a range of high energy. We explore the idea of a network of domain walls appear on the surface of a soliton star, where we consider the possibility of finding the fermionic zero mode in the network of domain walls. Based on Friedmann equation, we graphically analyze the behavior of the energy density of the Universe as a function of scale factor for networks of domain walls to compare the evolution of the energy density in the era of matter and radiation.