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arXiv · 1004.3370

Reconstructing Dark Energy Potentials From Parameterized Deceleration Parameters

Yuting Wang·Lixin Xu·Jianbo Lu·Yuan-Xing Gui
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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 $V(\phi)$ and the cosmological parameters, such as the dimensionless energy density $\Omega_{\phi}$, $\Omega_{m}$, and the state parameter $w_\phi$, 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 $V(\phi)$ are plotted and analyzed. It's found that the potentials run away with the evolution of universe.

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Yuting Wang, Lixin Xu, Jianbo Lu, Yuan-Xing Gui. 2010-04-20. Reconstructing Dark Energy Potentials From Parameterized Deceleration Parameters. https://doi.org/10.1088/1674-1056/19/1/019801

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