Fivebrane instantons, topological wave functions and hypermultiplet moduli spaces
Fivebrane instantons, topological wave functions and hypermultiplet moduli spaces
We investigate quantum corrections to the hypermultiplet moduli space M in Calabi-Yau compactifications of type II string theories, with particular emphasis on instanton effects from Euclidean NS5-branes. Based on the consistency of D- and NS5-instanton corrections, we determine the topology of the hypermultiplet moduli space at fixed string coupling, as …