Abstract
The non-perturbative corrections to the universal hypermultiplet moduli space metric in the type-IIA superstring compactification on a Calabi - Yau threefold are investigated in the presence of 4d, N = 2 supergravity. These corrections come from multiple wrapping of the BPS (Euclidean) D2-branes around certain (BPS) Calabi - Yau 3-cycles, and they are known as the D-instantons. The exact universal hypermultiplet metric is governed by a quaternionic potential that satisfies the SU(∞) Toda equation. When the supergravity decouples, the metric is hyper-Kähler. We propose the mechanism that gravitationally dress any (D-instanton) hyper-Kähler metric to the (universal hypermultiplet) quaternionic metric of the same dimension.
| Original language | English |
|---|---|
| Pages (from-to) | 262-267 |
| Number of pages | 6 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 504 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 12 Apr 2001 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Gravitational dressing of D-instantons. / Ketov, Sergei V.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 504, No. 3, 12.04.2001, p. 262-267.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Gravitational dressing of D-instantons
AU - Ketov, Sergei V.
PY - 2001/4/12
Y1 - 2001/4/12
N2 - The non-perturbative corrections to the universal hypermultiplet moduli space metric in the type-IIA superstring compactification on a Calabi - Yau threefold are investigated in the presence of 4d, N = 2 supergravity. These corrections come from multiple wrapping of the BPS (Euclidean) D2-branes around certain (BPS) Calabi - Yau 3-cycles, and they are known as the D-instantons. The exact universal hypermultiplet metric is governed by a quaternionic potential that satisfies the SU(∞) Toda equation. When the supergravity decouples, the metric is hyper-Kähler. We propose the mechanism that gravitationally dress any (D-instanton) hyper-Kähler metric to the (universal hypermultiplet) quaternionic metric of the same dimension.
AB - The non-perturbative corrections to the universal hypermultiplet moduli space metric in the type-IIA superstring compactification on a Calabi - Yau threefold are investigated in the presence of 4d, N = 2 supergravity. These corrections come from multiple wrapping of the BPS (Euclidean) D2-branes around certain (BPS) Calabi - Yau 3-cycles, and they are known as the D-instantons. The exact universal hypermultiplet metric is governed by a quaternionic potential that satisfies the SU(∞) Toda equation. When the supergravity decouples, the metric is hyper-Kähler. We propose the mechanism that gravitationally dress any (D-instanton) hyper-Kähler metric to the (universal hypermultiplet) quaternionic metric of the same dimension.
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U2 - 10.1016/S0370-2693(01)00304-5
DO - 10.1016/S0370-2693(01)00304-5
M3 - Article
VL - 504
SP - 262
EP - 267
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3
ER -