English

Dynamical cosmologies in Eddington-inspired-Born-Infeld theory

General Relativity and Quantum Cosmology 2019-09-24 v1

Abstract

In this paper we study the cosmological evolution of the universe filled with a perfect fluid in the Eddington-inspired Born-Infeld gravity. Applying an alternative method in which the evolution of the scale factor for this theory is linked to the cosmographic parameters, we obtain a dynamical dark energy solution where the singularity (through a regular bounce or a loitering phase) still can be avoided for κ>0\kappa>0 with w>0w>0. For the range 1<w<0-1<w<0, the results lead us to universes that experience an unlimited rate of expansion with finite density. Also, we obtain a possible maximum value of H=4.338×1043/tPlanckH=4.338\times10^{-43}/t_{\text{Planck}} at the cosmic bounce point.

Keywords

Cite

@article{arxiv.1907.06788,
  title  = {Dynamical cosmologies in Eddington-inspired-Born-Infeld theory},
  author = {N. M. Jiménez Cruz and Celia Escamilla-Rivera},
  journal= {arXiv preprint arXiv:1907.06788},
  year   = {2019}
}

Comments

6 pages, 9 figures