Dynamical cosmologies in Eddington-inspired-Born-Infeld theory

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 $\kappa >0$ with $w>0$. For the range $-1<w<0$, the results lead us to universes that experience an unlimited rate of expansion with finite density. Also, we obtain a possible maximum value of $H=4.338\times 10^{-43}/t_{\text{Planck}}$ at the cosmic bounce point.

arXiv comment6 pages, 9 figures

References in corpus (19)

• Absence of Singularity in Loop Quantum Cosmology
• Effective Field Theory for Massive Gravitons and Gravity in Theory Space
• Eddington's theory of gravity and its progeny
• Effective Lagrangians and Universality Classes of Nonlinear Bigravity
• Surface singularities in Eddington-inspired Born-Infeld gravity
• Loop quantum cosmology and slow roll inflation
• Eddington-inspired Born-Infeld gravity: astrophysical and cosmological constraints
• Cosmology with Eddington-inspired Gravity
• A tensor instability in the Eddington inspired Born-Infeld Theory of Gravity
• Eddington-Born-Infeld gravity and the large scale structure of the Universe
• Universe Driven by Perfect Fluid in Eddington-inspired Born-Infeld Gravity
• Linear perturbations in Eddington-inspired Born-Infeld gravity
• Global structure of bigravity solutions
• A note on bigravity and dark matter
• Dark matter density profile and galactic metric in Eddington-inspired Born-Infeld gravity
• Eddington-Born-Infeld cosmology: a cosmographic approach, a tale of doomsdays and the fate of bound structures
• Large Scale Structure Formation in Eddington-inspired Born-Infeld Gravity
• Tensor-to-Scalar Ratio in Eddington-inspired Born-Infeld Inflation
• The final state of gravitational collapse in Eddington-inspired Born-Infeld theory