Parametrization of Quintessence and Its Potential

Details Parametrization of Quintessence and Its Potential Parametrization of Quintessence and Its Potential

2005-05-12

arxiv.org/abs/astro-ph/0505253v4

Phys.Rev.D72:023504,2005

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures, LaTeX2e

Scientific paper

10.1103/PhysRevD.72.023504

We develop a theoretical method of constructing the quintessence potential directly from the effective equation of state function $w(z)$, which describes the properties of the dark energy. We apply our method to four parametrizations of equation of state parameter and discuss the general features of the resulting potentials. In particular, it is shown that the constructed quintessence potentials are all in the form of a runaway type.

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