Ref HAL: hal-00362465_v1
Ref Arxiv: 0902.2761
DOI: 10.1088/1751-8113/42/33/335402
WoS: 000268480000023
Ref. & Cit.: NASA ADS
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39 Citations
Résumé:

We present some results on instanton corrections to the hypermultiplet moduli space in Calabi-Yau compactifications of type-II string theories. Previously, using twistor methods, only a class of D-instantons (D2-instantons wrapping A-cycles) was incorporated exactly and the rest was treated only linearly. We go beyond the linear approximation and give a set of holomorphic functions which, through a known procedure, capture the effect of D-instantons at all orders. Moreover, we show that for a sector where all instanton charges have vanishing symplectic invariant scalar product, the hypermultiplet metric can be computed explicitly.

Commentaires: 35 pages, 3 figures, uses JHEP3.cls .