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 wk(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.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- 2006
- DOI:
- arXiv:
- arXiv:astro-ph/0601007
- Bibcode:
- 2006MPLA...21.1683L
- Keywords:
-
- 98.80.Cq;
- 98.65.Dx;
- Particle-theory and field-theory models of the early Universe;
- Superclusters;
- large-scale structure of the Universe;
- Astrophysics
- E-Print:
- 8 pages, 1 figure