Stringy Instantons and Quiver Gauge Theories
High Energy Physics - Theory
2009-11-11 v3
Abstract
We explore contributions to the 4D effective superpotential which arise from Euclidean D3 branes (``instantons'') that intersect space-filling D-branes. These effects can perturb the effective field theory on the space-filling branes by nontrivial operators composed of charged matter fields, changing the vacuum structure in a qualitative way in some examples. Our considerations are exemplified throughout by a careful study of a fractional brane configuration on a del Pezzo surface.
Cite
@article{arxiv.hep-th/0610003,
title = {Stringy Instantons and Quiver Gauge Theories},
author = {Bogdan Florea and Shamit Kachru and John McGreevy and Natalia Saulina},
journal= {arXiv preprint arXiv:hep-th/0610003},
year = {2009}
}
Comments
30 pages, 4 figures; v2: reference added; v3: confusing minor error in axion charges fixed (thanks to D. Green for pointing it out)