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arXiv · 1907.06788

Dynamical cosmologies in Eddington-inspired-Born-Infeld theory

N. M. Jiménez Cruz·Celia Escamilla-Rivera
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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 $H=4.338\times10^{-43}/t_{\text{Planck}}$ at the cosmic bounce point.

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N. M. Jiménez Cruz, Celia Escamilla-Rivera. 2019-07-15. Dynamical cosmologies in Eddington-inspired-Born-Infeld theory. https://doi.org/10.1142/s0218271819501670

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