D-brane Inflation
Abstract
We discuss a calculable version of brane inflation, in which a set of parallel D-brane and anti-D-brane worlds, initially displaced in extra dimension, slowly attract each other. In the effective four-dimensional theory this slow motion of branes translates into a slow-roll of a scalar field (proportional to their separation) with a flat potential that drives inflation. The number of possible e-foldings is severely constrained. The scalar spectral index is found to be 0.97, while the effective compactification scale is of order GeV. Reheating of the Universe is provided by collision and subsequent annihilation of branes.
Cite
@article{arxiv.hep-th/0105203,
title = {D-brane Inflation},
author = {G. Dvali and Q. Shafi and S. Solganik},
journal= {arXiv preprint arXiv:hep-th/0105203},
year = {2007}
}
Comments
Talk given by Q.S. at the workshop in Heidelberg (April 4-7, 2001), and at the EURESCO conference in Le Londe (France) May 11-16, 2001. 12pp