Ref HAL: hal-01099930_v1
Ref Arxiv: 1412.8182
DOI: 10.1007/JHEP02(2015)176
WoS: 000350695900001
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
13 Citations
Résumé:

We use the twistorial construction of D-instantons in Calabi-Yau compactifications of type II string theory to compute an explicit expression for the metric on the hypermultiplet moduli space affected by these non-perturbative corrections. In this way we obtain an exact quaternion-Kahler metric which is a non-trivial deformation of the local c-map. In the four-dimensional 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 S-duality invariant equation which determines the singularity hypersurface after inclusion of the D(-1)-instanton effects.

Commentaires: 20+12+4 pages