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arXiv · 0704.0784

D-brane Instantons on the T^6/Z_3 orientifold

Massimo Bianchi·Francesco Fucito·Jose F. Morales
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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.

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Massimo Bianchi, Francesco Fucito, Jose F. Morales. 2007-05-31. D-brane Instantons on the T^6/Z_3 orientifold. https://doi.org/10.1088/1126-6708%2F2007%2F07%2F038

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