Fractional Branes, Confinement, and Dynamically Generated Superpotentials

Details Fractional Branes, Confinement, and Dynamically Generated Superpotentials Fractional Branes, Confinement, and Dynamically Generated Superpotentials

1998-03-17

arxiv.org/abs/hep-th/9803140v2

Nucl.Phys. B532 (1998) 137-152

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, 2 figures, uses harvmac. References added

Scientific paper

10.1016/S0550-3213(98)00466-0

We examine the effects of instantons in four dimensional N=1 supersymmetric gauge theory by including D0-branes in type IIA brane constructions. We examine instanton generated superpotentials in supersymmetric QCD and find that they are due to a repulsive force between D4-branes bound to D0-branes ending on NS 5-branes. We study situations where instanton effects break supersymmetry such as the Intriligator-Thomas-Izawa-Yangagida model and relate this to a IIA brane construction. We also argue how confinement due to a condensate of fractional instantons manifests itself in Super Yang-Mills theory using fractional D0 branes, D4 branes, and NS strings.

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