Supergravity description of spacetime instantons

Classical and Quantum Gravity (Impact Factor: 3.56). 08/2006; DOI: 10.1088/0264-9381/24/3/001
Source: arXiv

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.

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