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Dynamical cosmologies in Eddington-inspired-Born-Infeld theory
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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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Cited by 1 Pith paper
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Eddington-inspired Born-Infeld gravity: Constraints from the generalized parton distributions (GPDs)
Using the proton's quark pressure profile from a GPD fit, the authors update upper bounds on the EiBI gravity parameter kappa to about 0.1 to 0.3 in the quoted units.
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