Supergravity description of spacetime instantons

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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

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/189650

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0607055
 http://arxiv.org/abs/hep-th/0607055
 Class.Quant.Grav.24:509-534,2007
 doi:10.1088/0264-9381/24/3/001

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arXiv