Aspects of brane-antibrane inflation

Details Aspects of brane-antibrane inflation Aspects of brane-antibrane inflation

2005-10-03

arxiv.org/abs/hep-th/0510018v1

Can.J.Phys. 84 (2006) 447-452

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 5 figures; proceedings of Theory Canada 1 conference, 2-5 June 2005, UBC, Vancouver

Scientific paper

10.1139/P06-044

I describe a dynamical mechanism for solving the fine-tuning problem of brane-antibrane inflation. By inflating with stacks of branes and antibranes, the branes can naturally be trapped at a metastable minimum of the potential. As branes tunnel out of this minimum, the shape of the potential changes to make the minimum shallower. Eventually the minimum disappears and the remaining branes roll slowly because the potential is nearly flat. I show that even with a small number of branes, there is a good chance of getting enough inflation. Running of the spectral index is correlated with the tilt in such a way as to provide a test of the model by future CMB experiments.

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