Why do we live in 3+1 dimensions?
High Energy Physics - Theory
2007-05-23 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
In the context of string theory we argue that higher dimensional Dp-branes unwind and evaporate so that we are left with D3-branes embedded in a (9+1)-dimensional bulk. One of these D3-branes plays the role of our Universe. Within this picture, the evaporation of the higher dimensional Dp-branes provides the entropy of our Universe.
Cite
@article{arxiv.hep-th/0501163,
title = {Why do we live in 3+1 dimensions?},
author = {Ruth Durrer and Martin Kunz and Mairi Sakellariadou},
journal= {arXiv preprint arXiv:hep-th/0501163},
year = {2007}
}
Comments
9 pages, 4 figures. Citations added, text and figures updated to match version accepted for publication