Supergravity Instantons and the Universal Hypermultiplet
High Energy Physics - Theory
2010-11-19 v2
Abstract
The effective action of N=2 supersymmetric 5-dimensional supergravity arising from compactifications of M-theory on Calabi-Yau threefolds receives non-perturbative corrections from wrapped Euclidean membranes and fivebranes. These contributions can be interpreted as instanton corrections in the 5 dimensional field theory. Focusing on the universal hypermultiplet, a solution of this type is presented and the instanton action is calculated, generalizing previous results involving membrane instantons. The instanton action is not a sum of membrane and fivebrane contributions: it has the form reminiscent of non-threshold bound states.
Cite
@article{arxiv.hep-th/0005068,
title = {Supergravity Instantons and the Universal Hypermultiplet},
author = {Michael Gutperle and Michal Spalinski},
journal= {arXiv preprint arXiv:hep-th/0005068},
year = {2010}
}
Comments
16 pages, harvmac(b), no figures, reference added, minor changes, version to appear in JHEP