Gravitational dressing of D-instantons

Результат исследований: Материалы для журналаСтатья

5 Цитирования (Scopus)


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.

Язык оригиналаАнглийский
Страницы (с-по)262-267
Число страниц6
ЖурналPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Номер выпуска3
СостояниеОпубликовано - 12 апр 2001


ASJC Scopus subject areas

  • Nuclear and High Energy Physics