Parametrization of K-essence and Its Kinetic Term

Abstract

We construct the non-canonical kinetic term of a k-essence field directly from the effective equation of state function $w_k(z)$, which describes the properties of the dark energy. Adopting the usual parametrizations of equation of state we numerically reproduce the shape of the non-canonical kinetic term and discuss some features of the constructed form of k-essence.

8 pages, 1 figure; accepted by Mod. Phys. Lett. A; minor changes to references

References in corpus (1)

• Cosmology and the Fate of Dilatation Symmetry

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