Dark energy and decompactification in string gas cosmology
High Energy Physics - Theory
2007-05-23 v2 Astrophysics
High Energy Physics - Phenomenology
Abstract
We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.
Keywords
Cite
@article{arxiv.hep-th/0509225,
title = {Dark energy and decompactification in string gas cosmology},
author = {Francesc Ferrer and Syksy Rasanen},
journal= {arXiv preprint arXiv:hep-th/0509225},
year = {2007}
}
Comments
23 pages, 6 figures. Published version. Added references