Conifold singularities, resumming instantons and non-perturbative mirror symmetry

Abstract

We determine the instanton corrected hypermultiplet moduli space in type IIB compactifications near a Calabi-Yau conifold point where the size of a two-cycle shrinks to zero. We show that D1-instantons resolve the conifold singularity caused by worldsheet instantons. Furthermore, by resumming the instanton series, we reproduce exactly the results obtained by Ooguri and Vafa on the type IIA side, where membrane instantons correct the hypermultiplet moduli space. Our calculations therefore establish that mirror symmetry holds non-perturbatively in the string coupling.

14 pages, 1 figure

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• Hypermultiplets, Hyperkahler Cones and Quaternion-Kahler Geometry
• Hypermultiplets and Topological Strings
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• Linear perturbations of Hyperkahler metrics
• Five-dimensional gauge theory and compactification on a torus
• On TCS $G_2$ manifolds and 4D Emergent Strings
• Non-perturbative effects and wall-crossing from topological strings
• Non-Supersymmetric Seiberg Duality, Orientifold QCD and Non-Critical Strings
• Heterotic-type II duality in twistor space
• Recent results in four-dimensional non-perturbative string theory