Unoriented D-brane instantons

Details Unoriented D-brane instantons Unoriented D-brane instantons

2012-02-29

arxiv.org/abs/1202.6508v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 1 figure. Proceedings of the "XVII European Workshop on String Theory 2011", Padova, Italy, 5-9 September 2011

Scientific paper

We give a pedagogical introduction to D-brane instanton effects in vacuum configurations with open and unoriented strings. We focus on quiver gauge theories for unoriented D-branes at orbifold singularities and describe in some detail the Z_3 case, where both `gauge' and `exotic' instantons can generate non-perturbative super potentials, and the Z_5 case, where supersymmetry breaking may arise from the combined effect of `gauge' instantons and a FI D-term.

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