D-brane Instantons on the T^6/Z_3 orientifold
Abstract
We give a detailed microscopic derivation of gauge and stringy instanton generated superpotentials for gauge theories living on D3-branes at Z_3-orientifold singularities. Gauge instantons are generated by D(-1)-branes and lead to Affleck, Dine and Seiberg (ADS) like superpotentials in the effective N=1 gauge theories with three generations of bifundamental and anti/symmetric matter. Stringy instanton effects are generated by Euclidean ED3-branes wrapping four-cycles on T^6/\Z_3. They give rise to Majorana masses in one case and non-renormalizable superpotentials for the other cases. Finally we determine the conditions under which ADS like superpotentials are generated in N=1 gauge theories with adjoints, fundamentals, symmetric and antisymmetric chiral matter.
Keywords
Cite
@article{arxiv.0704.0784,
title = {D-brane Instantons on the T^6/Z_3 orientifold},
author = {Massimo Bianchi and Francesco Fucito and Jose F. Morales},
journal= {arXiv preprint arXiv:0704.0784},
year = {2008}
}
Comments
31 pages, no figures