Stringy instantons and dualities
β
M. Frau
π
Article
π
2011
π
John Wiley and Sons
π
English
β 190 KB
## Abstract We discuss nonβperturbative corrections to the gauge kinetic functions in a fourβdimensional π© = 2 gauge theory realized with a system of D7/D3βbranes in a compactification of type I^β²^ theory on π―~4~β€~2~ Γ β€~2~. The nonβperturbative contributions arise when D(β1) branes, corresponding