Parametrizations of the Dark Energy Density and Scalar Potentials

Details Parametrizations of the Dark Energy Density and Scalar Potentials Parametrizations of the Dark Energy Density and Scalar Potentials

2006-03-04

arxiv.org/abs/astro-ph/0603109v3

Mod.Phys.Lett.A22:883-890,2007

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, ws-mpla.cls, Accepted for publication in Mod. Phys. Lett. A

Scientific paper

10.1142/S0217732307022839

We develop a theoretical method of constructing the scalar (quintessence or phantom) potential directly from the dimensionless dark energy function X(z), the dark energy density in units of its present value. We apply our method to two parametrizations of the dark energy density, the quiessence-Lambda ansatz and the generalized Chaplygin gas model, and discuss some features of the constructed potentials.

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