Exotic instanton counting and heterotic/type I' duality
High Energy Physics - Theory
2009-08-05 v1
Abstract
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 and its deformation by RR background to fully localize the integration. The resulting prepotential describes non-perturbative corrections to the quartic couplings of the gauge field F living on the D7's. The results match perfectly those obtained in the dual heterotic theory from a protected 1-loop computation, thus providing a non-trivial test of the duality itself.
Keywords
Cite
@article{arxiv.0905.4586,
title = {Exotic instanton counting and heterotic/type I' duality},
author = {Marco Billo' and Livia Ferro and Marialuisa Frau and Laurent Gallot and Alberto Lerda and Igor Pesando},
journal= {arXiv preprint arXiv:0905.4586},
year = {2009}
}
Comments
42 pages, 3 figures