• Brane cosmology from observational surveys and its comparison with standard FRW cosmology 

    Astashenok, Artyom V.; Elizalde, Emilio; Haro Cases, Jaume; Odintsov, Sergei D.; Yurov, Artyom V. (2013-09)
    Article
    Accés restringit per política de l'editorial
    Several simple dark energy models on the brane are investigated. They are compared with corresponding models in the frame of 4d Friedmann-Robertson-Walker cosmology. For constraining the parameters of the models considered, ...
  • Gravitational particle production in bouncing cosmologies 

    Haro Cases, Jaume; Elizalde, Emilio (2015-10-13)
    Article
    Accés obert
    © 2015 IOP Publishing Ltd and Sissa Medialab srl . It is argued that the Universe reheating in bouncing cosmologies could be explained via gravitational particle production, as due to a sudden phase transition in the ...
  • Gravitational Particle Production in Massive Chaotic Inflation and the Moduli Problem 

    Haro Cases, Jaume; Elizalde, Emilio (2012-02)
    Article
    Accés restringit per política de l'editorial
    Particle production from vacuum fluctuations during inflation is briefly revisited. The moduli problem occurring with light particles produced at the end of inflation is addressed, namely the fact that some results are in ...
  • Inflation and late-time acceleration from a double-well potential with cosmological constant 

    Haro Cases, Jaume; Elizalde, Emilio (2016-06-01)
    Article
    Accés restringit per política de l'editorial
    A model of a universe without big bang singularity is presented, which displays an early inflationary period ending just before a phase transition to a kination epoch. The model produces enough heavy particles so as to ...
  • Sudden singularities in semiclassical gravity 

    Haro Cases, Jaume; Amorós Torrent, Jaume; Elizalde, Emilio (2012-06-19)
    Article
    Accés restringit per política de l'editorial
    It has been claimed in a recent paper [J. D. Barrow, A. B. Batista, J. C. Fabris, M. J. S. Houndjo, and G. Dito, Phys. Rev. D 84, 123518 (2011).] that sudden singularities will survive in semiclassical gravity. This issue ...