Multi-Instanton Corrections to Superpotentials in Type II Compactifications

Details Multi-Instanton Corrections to Superpotentials in Type II Compactifications Multi-Instanton Corrections to Superpotentials in Type II Compactifications

2008-10-24

arxiv.org/abs/0810.4369v1

Int.J.Mod.Phys.A24:4671-4684,2009

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 17 pages, 3 Postscript figures

Scientific paper

10.1142/S0217751X09045819

We consider two simple examples of multi-instanton configurations in type II 4d N=1 superstring compactifications. The first one involves O(1) and U(1) D2-instantons embedded in T^6/(Z_2 x Z_2') geometry with SU(4) gauge symmetry coming from D6-branes and the second is related to quiver gauge theory of orientifolded orbifold of conifold containing fractional D(-1)-instantons and D3-branes. The additional zero modes of instantons which appear at the intersection points are lifted through interactions stemming from dimensionally reduced F- and D-terms. It is shown that multi-instanton configurations effectively generate corrections to the usual non-perturbative superpotential for chiral matter.

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