Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10400.6/4611
Título: | Cosmic infinity: a dynamical system approach |
Autor: | Bouhmadi Lopez, Mariam Marto, João 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: | FC - DF | Documentos por Auto-Depósito ICI - CMA | Documentos por Auto-Depósito |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Cosmic infinity.pdf | 1,1 MB | Adobe PDF | Ver/Abrir |
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