Ara es mostren els items 59-63 de 63

    • Viability of the Matter Bounce Scenario 

      Haro Cases, Jaume; Amorós Torrent, Jaume (Institute of Physics (IOP), 2015)
      Article
      Accés obert
      It is shown that teleparallel F(T) theories of gravity combined with Loop Quantum Cosmology support a Matter Bounce Scenario which is an alternative to the inflation scenario in the Big Bang paradigm. It is checked that ...
    • Viability of the matter bounce scenario in Loop Quantum Cosmology from BICEP2 last data 

      Haro Cases, Jaume; Amorós Torrent, Jaume (2014-08-12)
      Article
      Accés obert
      The CMB map provided by the Planck project constrains the value of the ratio of tensor-to-scalar perturbations, namely r, to be smaller than 0.11 (95 % CL). This bound rules out the simplest models of inflation. However, ...
    • Viability of the matter bounce scenario in F(T) gravity and Loop Quantum Cosmology forgeneral potentials 

      Haro Cases, Jaume; Amorós Torrent, Jaume (2014-12-01)
      Article
      Accés obert
      We consider the matter bounce scenario in F (T) gravity and Loop Quantum Cosmology (LQC) for phenomenological potentials that at early times provide a nearly matter dominated Universe in the contracting phase, having a ...
    • Viable inflationary evolution from Einstein frame loop quantum cosmology 

      Haro Cases, Jaume; Odintsov, Sergei D.; Oikonomou, V. K. (American Physical Society (APS), 2018-04-27)
      Article
      Accés obert
      In this work we construct a bottom-up reconstruction technique for loop quantum cosmology scalar-tensor theories, from the observational indices. Particularly, the reconstruction technique is based on fixing the functional ...
    • Viscous cosmology for early- and late-time universe 

      Brevik, Iver; Grøn, Øyvind; Haro Cases, Jaume; Odintsov, Sergei D.; Saridakis, Emmanuel N. (2017-01-01)
      Article
      Accés obert
      point of view the inclusion of viscosity concepts in the macroscopic theory of the cosmic fluid would appear most natural, as an ideal fluid is after all an abstraction (exluding special cases such as superconductivity). ...