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Browsing by Author "Labraa P."

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Browsing by Author "Labraa P."

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  • Emergent universe in a Jordan-Brans-Dicke theory 
    Del Campo S.; Herrera R.; Labraa P. (2014-04-04)
    In this paper we study the emergent universe model in the context of a self-interacting Jordan-Brans-Dicke theory. The model presents a stable past eternal static solution which eventually enters a phase where the stability ...
  • Inflationary universe model with Ω > 1 and tachyon field 
    Labraa P.; Balart L.; Del Campo S.; Herrera R. (2014-04-04)
    In this work we study closed inflationary universe models by using a tachyonic field theory. We determine and characterize the existence of an inflationary universe with Ω > 1. We found that these models are less restrictive ...
  • On the stability of Jordan-Brans-Dicke static universe 
    Del Campo S.; Herrera R.; Labraa P. (2014-04-04)
    In this work we study the stability of the Jordan-Brans-Dicke (JBD) static universe. This is motivated by the possibility that the universe might have started out in an asymptotically JBD static state, in the context of ...
  • Open inflationary universe with tachyonic matter 
    Labraa P.; Balart L.; Del Campo S.; Herrera R.; Saavedra J. (2014-04-04)
    We study a one-field open inflationary model in a universe dominated by tachyon matter [1, 2]. We work in the scenario of the one-bubble universe where bubble formation is described by the Coleman-De Lucia (CDL) instanton ...