%0 Journal Article
%T Membrane and fivebrane instantons from quaternionic geometry
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%A Alexandrov, S.
%A Saueressig, F.
%A Vandoren, S.
%Z 32 pages
%< avec comité de lecture
%@ 1126-6708
%J Journal of High Energy Physics
%I Springer
%V 0609
%P 040
%8 2006
%D 2006
%Z hep-th/0606259
%R 10.1088/1126-6708/2006/09/040
%K Nonperturbative Effects
%K Supergravity Models
%Z Physics [physics]/High Energy Physics - Theory [hep-th]Journal articles
%X 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.
%G English
%L in2p3-00134337
%U https://hal.in2p3.fr/in2p3-00134337
%~ IN2P3
%~ LPTA
%~ CNRS
%~ UNIV-MONTP2
%~ UNIV-MONTPELLIER
%~ UM1-UM2