Membrane and fivebrane instantons from quaternionic geometry

Details Membrane and fivebrane instantons from quaternionic geometry Membrane and fivebrane instantons from quaternionic geometry

2006-06-27

arxiv.org/abs/hep-th/0606259v1

JHEP0609:040,2006

Physics

High Energy Physics

High Energy Physics - Theory

32 pages

Scientific paper

10.1088/1126-6708/2006/09/040

We determine the one-instanton corrections to the universal hypermultiplet moduli space coming both from Euclidean membranes and NS-fivebranes wrapping the cycles of a (rigid) Calabi-Yau threefold. These corrections are completely encoded by a single function characterizing a generic four-dimensional quaternion-Kahler metric without isometries. We give explicit solutions for this function describing all one-instanton corrections, including the fluctuations around the instanton to all orders in the string coupling constant. In the semi-classical limit these results are in perfect agreement with previous supergravity calculations.

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