Cosmology With Non-Minimally Coupled K-Field
Abstract
We consider non-minimally coupled (with gravity) scalar field with non-canonical kinetic energy. The form of the kinetic term is of Dirac-Born-Infeld (DBI) form.We study the early evolution of the universe when it is sourced only by the k-field, as well as late time evolution when both the matter and k-field are present. For the k-field, we have considered constant potential as well as potential inspired from Boundary String Field Theory (B-SFT). We show that it is possible to have inflationary solution in early time as well as late time accelerating phase. The solutions also exhibit attractor property in a sense that it does not depend on the initial conditions for a certain values of the parameters.
Cite
@article{arxiv.0809.2852,
title = {Cosmology With Non-Minimally Coupled K-Field},
author = {A. A. Sen and N. Chandrachani Devi},
journal= {arXiv preprint arXiv:0809.2852},
year = {2015}
}
Comments
10 pages, Revtex style, 14 eps figures, to appear in General Relativity and Gravitation