Nonperturbative low-energy effective action of the universal hypermultiplet

Details Nonperturbative low-energy effective action of the universal hypermultiplet Nonperturbative low-energy effective action of the universal hypermultiplet

2003-01-13

arxiv.org/abs/hep-th/0301074v1

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, invited talk at the YITP String Theory Workshop in Kyoto, November 15-16, 2002

Scientific paper

The non-perturbative (D-instanton corrected) low-energy effective action of the universal hypermultiplet in the type-IIA string theory compactified on a Calabi-Yau threefold is calculated in 4d, N=2 supergravity. The action is given by the quaternionic non-linear sigma-model whose metric is governed by the Eisenstein series E_{3/2}. The U(1)xU(1) isometry and SL(2,Z) modular invariance play the key role in our construction.

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