Disk Instantons, Mirror Symmetry and the Duality Web

Details Disk Instantons, Mirror Symmetry and the Duality Web Disk Instantons, Mirror Symmetry and the Duality Web

2001-05-04

arxiv.org/abs/hep-th/0105045v1

Z.Naturforsch. A57 (2002) 1-28

Physics

High Energy Physics

High Energy Physics - Theory

56 pages 19 figures

Scientific paper

We apply the methods recently developed for computation of type IIA disk instantons using mirror symmetry to a large class of D-branes wrapped over Lagrangian cycles of non-compact Calabi-Yau 3-folds. Along the way we clarify the notion of ``flat coordinates'' for the boundary theory. We also discover an integer IR ambiguity needed to define the quantum theory of D-branes wrapped over non-compact Lagrangian submanifolds. In the large $N$ dual Chern-Simons theory, this ambiguity is mapped to the UV choice of the framing of the knot. In a type IIB dual description involving $(p,q)$ 5-branes, disk instantons of type IIA get mapped to $(p,q)$ string instantons. The M-theory lift of these results lead to computation of superpotential terms generated by M2 brane instantons wrapped over 3-cycles of certain manifolds of $G_2$ holonomy.

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