Authors: Sergei Alexandrov Sibasish Banerjee
Publish Date: 2015/02/27
Volume: 2015, Issue: 2, Pages: 176-
Abstract
We use the twistorial construction of Dinstantons in CalabiYau compactifications of type II string theory to compute an explicit expression for the metric on the hypermultiplet moduli space affected by these nonperturbative corrections In this way we obtain an exact quaternionKähler metric which is a nontrivial deformation of the local cmap In the fourdimensional case corresponding to the universal hypermultiplet our metric fits the Tod ansatz and provides an exact solution of the continuous Toda equation We also analyze the fate of the curvature singularity of the perturbative metric by deriving an Sduality invariant equation which determines the singularity hypersurface after inclusion of the D1instanton effectsThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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