Repositorio Institucional Académico. Universidad Andrés Bello. Chile

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Closed inflationary universe models in Brane World Cosmology
(World Scientific Publishing, 2005-05-01) Del Campo, S; Herrera, R; Saavedra, J
In this article we study closed inflationary universe models proposed by Linde in a brane world cosmological context. In this scenario we determine and characterize the existence of a closed universe, in presence of one self-interacting scalar field with an inflationary stage. We have found that our model, which takes into account a Brane World Cosmology, is less restrictive than the one that uses standard Einstein's General Relativity cosmology.
Extended closed inflationary universes
(IOP Publishing Ltd, 2005-07-07) del Campo, S; Herrera, R
In this paper, we study a type of model for a closed inflationary universe using the Jordan-Brans-Dicke theory. Herein we determine and characterize the existence of Omega > 1, together with the period of inflation. We have found that our model, which takes into account a Jordan-Brans-Dicke type of theory, is less restrictive than that used in Einstein's theory of general relativity. Our results are compared to those found in Einstein's theory of relativity.