Supergravity description of spacetime instantons

Abstract

We present and discuss BPS instanton solutions that appear in type II string theory compactifications on Calabi-Yau threefolds. From an effective action point of view these arise as finite action solutions of the Euclidean equations of motion in four-dimensional N=2 supergravity coupled to tensor multiplets. As a solution generating technique we make use of the c-map, which produces instanton solutions from either Euclidean black holes or from Taub-NUT like geometries.

35 pages, some clarifications added

References in corpus (2)

• Membrane Instantons and de Sitter Vacua
• Membrane and fivebrane instantons from quaternionic geometry

Cited by in corpus (6)

• Special Geometry of Euclidean Supersymmetry III: the local r-map, instantons and black holes
• Instantons, black holes and harmonic functions
• Instantons, Hypermultiplets and the Heterotic String
• Finite and infinite-dimensional symmetries of pure N=2 supergravity in D=4
• Instantons and Wormholes in N=2 supergravity
• Instantons and Wormholes for the Universal Hypermultiplet