Realistic Yukawa Couplings through Instantons in Intersecting Brane Worlds
High Energy Physics - Theory
2008-11-26 v3
Abstract
The Yukawa couplings of the simpler models of D-branes on toroidal orientifolds suffer from the so-called ``rank one'' problem -- there is only a single non-zero mass and no mixing. We consider the one-loop contribution of E2-instantons to Yukawa couplings on intersecting D6-branes, and show that they can solve the rank one problem. In addition they have the potential to provide a geometric explanation for the hierarchies observed in the Yukawa coupling. In order to do this we provide the necessary quantities for instanton calculus in this class of background.
Keywords
Cite
@article{arxiv.hep-th/0612110,
title = {Realistic Yukawa Couplings through Instantons in Intersecting Brane Worlds},
author = {Steven A. Abel and Mark D. Goodsell},
journal= {arXiv preprint arXiv:hep-th/0612110},
year = {2008}
}
Comments
17 pages, 1 figure. Published version