Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.6/4611
Título: Cosmic infinity: a dynamical system approach
Autor: Bouhmadi-López, Mariam
Marto, João Pedro de Jesus
Morais, João
Silva, César M.
Palavras-chave: Cosmology
Dynamical system
Data: 21-Mar-2017
Citação: Mariam Bouhmadi-López et al JCAP03(2017)042
Resumo: Dynamical system techniques are extremely useful to study cosmology. It turns out that in most of the cases, we deal with finite isolated fixed points corresponding to a given cosmological epoch. However, it is equally important to analyse the asymptotic behaviour of the universe. On this paper, we show how this can be carried out for 3-forms model. In fact, we show that there are fixed points at infinity mainly by introducing appropriate compactifications and defining a new time variable that washes away any potential divergence of the system. The richness of 3-form models allows us as well to identify normally hyperbolic non-isolated fixed points. We apply this analysis to three physically interesting situations: (i) a pre-inflationary era; (ii) an inflationary era; (iii) the late-time dark matter/dark energy epoch.
Peer review: yes
URI: http://hdl.handle.net/10400.6/4611
DOI: 10.1088/1475-7516/2017/03/042
Versão do Editor: http://iopscience.iop.org/article/10.1088/1475-7516/2017/03/042/meta
Aparece nas colecções:ICI - CMA | Documentos por Auto-Depósito
FC - DF | Documentos por Auto-Depósito

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