Wrapped Branes and Compact Extra Dimensions in Cosmology
High Energy Physics - Theory
2009-11-10 v3 Astrophysics
General Relativity and Quantum Cosmology
Abstract
We present a cosmological model in 1+m+p dimensions, where in m-dimensional space there are uniformly distributed p-branes wrapping over the extra p-dimensions. We find that during cosmological evolution m-dimensional space expands with the exact power-law corresponding to pressureless matter while the extra p-dimensions contract. Adding matter, we also obtain solutions having the same property. We show that this might explain in a natural way why the extra dimensions are small compared to the observed three spatial directions.
Cite
@article{arxiv.hep-th/0301031,
title = {Wrapped Branes and Compact Extra Dimensions in Cosmology},
author = {Ali Kaya and Tonguc Rador},
journal= {arXiv preprint arXiv:hep-th/0301031},
year = {2009}
}
Comments
6 pages, RevTex4, added a figure, section IV rewritten, conclusions unaltered