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Browsing by Author "Labrana P."

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Browsing by Author "Labrana P."

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  • del Campo S.; Herrera R.; Saavedra J.; Labrana P. (2014-04-04)
    In this paper, we study closed inflationary universe models using the Gauss-Bonnet Brane. We determine and characterize the existence of a universe with Ω > 1, with an appropriate period of inflation. We have found that ...
  • Balart L.; Del Campo S.; Herrera R.; Labrana P. (2014-04-04)
    In this article we study closed inflationary universe models by using a tachyonic field theory. We determine and characterize the existence of a universe which has Ω>1 and which describes a period of inflation. We find ...
  • Del Campo S.; Guendelman E.I.; Kaganovich A.B.; Herrera R.; Labrana P. (2014-04-04)
    The dilaton-gravity sector of a linear in the scalar curvature, scale invariant Two Measures Field Theory (TMT), is explored in detail in the context of closed FRW cosmology and shown to allow stable emerging universe ...
  • Campo S.D.; Guendelman E.I.; Herrera R.; Labrana P. (2014-04-04)
    We consider a scale invariant model which includes a R2 term in action and show that a stable "emerging universe" scenario is possible. The model belongs to the general class of theories, where an integration measure ...
  • Cataldo M.; Labrana P.; Del Campo S.; Crisostomo J.; Salgado P. (2014-04-04)
    In this paper we study the possibility of sustaining an evolving wormhole via exotic matter made out of phantom energy. We show that this exotic source can support the existence of evolving wormhole spacetimes. Explicitly, ...
  • Balart L.; del Campo S.; Herrera R.; Labrana P.; Saavedra J. (2014-04-04)
    We study one-field open inflationary models in a universe dominated by tachyon matter. In these scenarios, we determine and characterize the existence of the Coleman-De Lucia (CDL) instanton. Also, we study the Lorentzian ...