D-instantons and universal hypermultiplet
| dc.creator | Ketov, Sergei V. | |
| dc.date | 2001-12-03 | |
| dc.date | 2001-12-08 | |
| dc.date.accessioned | 2026-07-07T04:12:48Z | |
| dc.date.available | 2026-07-07T04:12:48Z | |
| dc.description | Quantum non-perturbative geometry of the universal hypermultiplet is investigated. We consider the simple case when the D-instantons, originating from the Calabi-Yau wrapped D2-branes, preserve a U(1)xU(1) symmetry of the universal hypermultiplet moduli space. The cluster decomposition of D-instantons is proved to be valid in a curved spacetime. We find an SL(2,Z) duality-invariant quaternionic solution to the effective NLSM metric of the universal hypermultiplet, which is governed by a modular-invariant function. This function appears to be the same function found by Green and Gutperle, and describing the modular invariant completion of the R^4 term by the D-instanton effects in the type-II superstring/M-theory. We argue that our solution interpolates between the perturbative (large CY volume) region and the superconformal (Landau-Ginzburg) region in the universal hypermultiplet moduli space. We also calculate a non-perturbative scalar potential in the hyper-Kähler limit, when an abelian isometry of the universal hypermultiplet moduli space is gauged in the presence of D-instantons. | |
| dc.description | 21 pages, LaTeX; references added, sect. 3 expanded | |
| dc.identifier | https://arxiv.org/abs/hep-th/0112012 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0112012 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/51030 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | D-instantons and universal hypermultiplet | |
| dc.type | text |