Geometrical Tachyon Dynamics in the Background of a Bulk Tachyon Field
High Energy Physics - Theory
2009-11-11 v3 General Relativity and Quantum Cosmology
Abstract
We study the dynamics of a D3-brane moving in the background of a bulk tachyon field of a D3-brane solution of Type-0 string theory. We show that the dynamics on the probe D3-brane can be described by a geometrical tachyon field rolling down its potential which is modified by a function of the bulk tachyon and inflation occurs at weak string coupling, where the bulk tachyon condenses, near the top of the geometrical tachyon potential. We also find a late accelerating phase when the bulk tachyon asymptotes to zero which in the geometrical tachyon picture corresponds to the minimum of the geometrical potential.
Keywords
Cite
@article{arxiv.hep-th/0601152,
title = {Geometrical Tachyon Dynamics in the Background of a Bulk Tachyon Field},
author = {Eleftherios Papantonopoulos and Ioanna Pappa and Vassilios Zamarias},
journal= {arXiv preprint arXiv:hep-th/0601152},
year = {2009}
}
Comments
27 pages, 2 figures, accepted for publication in JHEP