1. Repositorio Digital IPN
  2. Posgrado
  3. Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada "Unidad Legaria"
  4. Tesis
  5. Doctorado
Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/11417
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dc.creatorGARCIA SALCEDO, RICARDO-
dc.creatorGONZALEZ, TAME-
dc.creatorMORENO, CLAUDIA-
dc.creatorNAPOLES, YUNELSY-
dc.creatorLEYVA, YOELSY-
dc.creatorQUIROS, ISRAEL-
dc.date2012-03-28T21:21:45Z-
dc.date2012-03-28T21:21:45Z-
dc.date2010-
dc.date.accessioned2013-01-16T15:15:22Z-
dc.date.available2013-01-16T15:15:22Z-
dc.date.issued2013-01-16-
dc.identifier1475-7516-
dc.identifierhttp://hdl.handle.net/123456789/934-
dc.identifier.urihttp://www.repositoriodigital.ipn.mx/handle/123456789/11417-
dc.descriptionWe apply the dynamical systems tools to study the asymptotic properties of a cosmological model based on a non-linear modification of General Relativity in which the standard Einstein-Hilbert action is replaced by one of Dirac-Born-Infeld type. It is shown that the dynamics of this model is extremely rich: there are found equilibrium points in the phase space that can be associated with matter-dominated, matter-curvature scaling, de Sitter, and even phantom-like solutions. Depending on the value of the overall parameters the dynamics in phase space can show multi-attractor structure into the future (multiple future attractors may co-exist). This is a consequence of bifurcations in control parameter space, showing strong dependence of the model’s dynamical properties on the free parameters. Contrary to what is expected from non-linear modifications of general relativity of this kind, removal of the initial spacetime singularity is not a generic feature of the corresponding cosmological model. Instead, the starting point of the cosmic dynamics — the past attractor in the phase space — is a state of infinitely large value of the Hubble rate squared, usually associated with the big bang singularity.-
dc.descriptionCentro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada — Legaria del IPN. Departamento de Fısica, Universidad Central de Las Villas,Santa Clara, Cuba. Departamento de Fısica y Matematicas,Centro Universitario de Ciencias Exactas e Ingenierıas, Universidad de Guadalajara. Division de Ciencias e Ingenierıa de la Universidad de Guanajuato.-
dc.languageen-
dc.publisherIOP PUBLISHING-
dc.relationJournal of Cosmology and Astroparticle Physics;2010 (027)-
dc.subjectmodified gravity-
dc.subjectgravity-
dc.subjectalternatives to inflation-
dc.subjectphysics of the early universe-
dc.titleASYMPTOTIC PROPERTIES OF A SUPPOSEDLY REGULAR (DIRAC-BORN-INFELD) MODIFICATION OF GENERAL RELATIVITY-
dc.typeArticle-
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