Branes and instantons intersecting at angles
arXiv:0905.1694 · doi:10.1007/JHEP01(2010)005
Abstract
We study in detail the system of D6 branes and euclidean D2-brane instantons intersecting at angles in type IIA string theory. We find that in the absence of orientifolds the system does not contribute to the low energy superpotential, in agreement with expectations based on effective field theory arguments. We also comment on the implications of our results for dual string theory pictures.
32 pages. v2: added refs, fixed typos, change of wording in section 4.2
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