Stringy instantons and dualities
High Energy Physics - Theory
2015-05-27 v1
Abstract
We discuss non-perturbative corrections to the gauge kinetic functions in a four-dimensional N=2 gauge theory realized with a system of D7/D3-branes in a compactification of type I' theory on T_4/Z_2 x Z_2. The non-perturbative contributions arise when D(-1) branes, corresponding to stringy instantons, are added to the system; such contributions can be explicitly evaluated using localization techniques and precisely match the results predicted by the heterotic/type I' duality. This agreement represents a very non-trivial test of the stringy multi-instanton calculus.
Cite
@article{arxiv.1102.2595,
title = {Stringy instantons and dualities},
author = {Marialuisa Frau},
journal= {arXiv preprint arXiv:1102.2595},
year = {2015}
}
Comments
6 pages, Contribution to the proceedings of the XVIth European Workshop on String Theory, Madrid, Spain, June 14-18 2010