Bouncing universe and non-BPS branes
Abstract
We describe string frame bouncing universe scenarios involving the creation and annihilation of a non-BPS D9-brane in type IIA superstring theory. We find several classes of solutions, in which the bounce is driven by the tachyon dynamics of the non-BPS brane. The metric and the dilaton are consistently described in terms of the lowest order effective action. The bounce solutions interpolate between contracting and expanding pre-big bang (or post-big bang) solutions. The singular behavior of our bounce solutions is the same as that of the pre-big bang (or post-big bang) solution. Upon adding a simple dilaton potential the asymptotic curvature singularity is removed but the dilaton still grows without bound. Such a potential may result from corrections in the open string sector.
Keywords
Cite
@article{arxiv.0906.3242,
title = {Bouncing universe and non-BPS branes},
author = {Philipp Höffer v. Loewenfeld and Jin U Kang and Nicolas Moeller and Ivo Sachs},
journal= {arXiv preprint arXiv:0906.3242},
year = {2014}
}
Comments
18 pages, 12 figures; v2: reference added