Reconstructing Dark Energy Potentials From Parameterized Deceleration Parameters

Abstract

In this paper, the properties of dark energy are investigated according to the parameterized deceleration parameter $q(z)$, which is used to describe the extent of the accelerating expansion of the universe. The potential of dark energy $V(\varphi )$ and the cosmological parameters, such as the dimensionless energy density ${\Omega }_{\varphi }$, ${\Omega }_m$, and the state parameter $w_{\varphi }$, are connected to it. Concretely, by giving two kinds of parameterized deceleration parameters $q(z)=a+\frac{bz}{1+z}$ and $q(z)=1/2+\frac{az+b}{(1+z{)}^2}$, the evolution of these parameters and the reconstructed potentials $V(\varphi )$ are plotted and analyzed. It's found that the potentials run away with the evolution of universe.

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Cited by in corpus (6)

• Paramerization of deceleration parameter in $f(Q)$ gravity
• A parametric reconstruction of the cosmological jerk from diverse observational data sets
• Constraints on the Parameterized Deceleration Parameter in FLRW Universe
• Model selection applied to reconstructions of the Dark Energy
• Exploring scalar field dynamics with Gaussian processes
• Density perturbation in the models reconstructed from jerk parameter