Domain walls and superpotentials from M-theory on Calabi-Yau three-folds

Compactification of M-theory in the presence of G-fluxes yields N = 2 five-dimensional gauged supergravity with a potential that lifts all supersymmetric vacua. We derive the effective superpotential directly from the Kaluza-Klein reduction of the eleven-dimensional action on a Calabi-Yau three-fold and compare it with the superpotential obtained by means of calibrations. We discuss an explicit domain wall solution, which represents five-branes wrapped over holomorphic cycles. This solution has a running volume and we comment on the possibility that quantum corrections provide a lower bound allowing for an AdS(5) vacuum of the 5-dimensional supergravity. (C) 2000 Elsevier Science B.V. All rights reserved.