61 citations · 215 across the 5 of their papers we have counts for
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Exotic instanton counting and heterotic/type I' duality
Marco Billo', Livia Ferro, Marialuisa Frau +3
We compute the partition function for the exotic instanton system corresponding to D-instantons on D7 branes in Type I' theory. We exploit the BRST structure of the moduli action a…
Classical solutions for exotic instantons?
Marco Billo', Marialuisa Frau, Laurent Gallot +2
We consider the D7/D(--1) system in Type I' as a prototypical "exotic" brane instanton. With respect to systems such as the D3/D(-1) ones, which correspond to gauge instantons in f…
Wrapped Magnetized Branes: Two Alternative Descriptions?
P. Di Vecchia, A. Liccardo, R. Marotta +2
We discuss two inequivalent ways for describing magnetized D-branes wrapped N times on a torus T^2. The first one is based on a non-abelian gauge bundle U(N), while the second one…
Instanton effects in N=1 brane models and the Kahler metric of twisted matter
Marco Billo, Paolo Di Vecchia, Marialuisa Frau +3
We consider locally consistent systems of magnetized D9 branes on an orbifolded six-torus which support N=1 gauge theories. In such realizations, the matter multiplets arise from "…
Instantons in N=2 magnetized D-brane worlds
Marco Billo, Marialuisa Frau, Igor Pesando +3
In a toroidal orbifold of type IIB string theory we study instanton effects in N=2 super Yang-Mills theories engineered with systems of wrapped magnetized D9 branes and Euclidean D…