Speaker
Mr
Daniel Junghans
(Leibniz Universität Hannover)
Description
We investigate whether vacuum solutions in flux compactifications that are obtained with smeared sources (orientifolds or D-branes) still survive when the sources are localised. This seems to rely on whether the solutions are BPS or not. We then use a specific setup with SUSY-breaking branes to further investigate this issue and show, for a wide class of boundary conditions, that there is no flux vacuum when the branes are described by a genuine delta-function. Even more, we find that the smeared solution is the unique solution with a regular brane profile. Our setup consists of a non-BPS AdS7 solution in massive IIA supergravity with smeared anti-D6-branes and fluxes T-dual to ISD fluxes in IIB supergravity. This casts doubts on the stringy consistency of non-BPS solutions that are obtained in the limit of smeared sources.
Primary authors
Mr
Daniel Junghans
(Leibniz Universität Hannover)
Mr
Johan Blabäck
(Uppsala Universitet)
Prof.
Marco Zagermann
(Leibniz Universität Hannover)
Dr
Thomas Van Riet
(Uppsala Universitet)
Dr
Timm Wrase
(Cornell University)
Prof.
Ulf Danielsson
(Uppsala Universitet)
