Nonperturbative corrections to 4D string theory effective actions from SL(2,Z) duality and supersymmetry

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We find the D(-1) and D1-brane instanton contributions to the hypermultiplet moduli space of type IIB string compactifications on Calabi-Yau threefolds. These combine with known perturbative and worldsheet instanton corrections into a single modular invariant function that determines the hypermultiplet low-energy effective acction.
5 pages, 1 figure; v2: minor changes, references added, title changed as requested by PRL

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/188451

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0612027
 http://arxiv.org/abs/hep-th/0612027
 Phys.Rev.Lett.98:211602,2007
 doi:10.1103/PhysRevLett.98.211602

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