Brane tachyon dynamics
High Energy Physics - Theory
2014-11-21 v1
Abstract
The dynamics of a tachyon attached to a Dvali, Gabadadze and Porrati (DGP) brane is investigated. Exponential potential and inverse power law potential are explored, respectively. The quasi-attractor behavior, for which the universe will eventually go into a phase similar to the slow-roll inflation, is discovered in both cases of exponential potential and inverse power law potential. The equation of state (EOS) of the virtual dark energy for a single scalar can cross the phantom divide in the branch for both potentials, while the EOS of the virtual dark energy for a single scalar can not cross this divide in the branch .
Keywords
Cite
@article{arxiv.1006.2192,
title = {Brane tachyon dynamics},
author = {Hongsheng Zhang and Xin-Zhou Li and Hyerim Noh},
journal= {arXiv preprint arXiv:1006.2192},
year = {2014}
}
Comments
20 pages, 12 figs, to appear in PLB