4 papers · 1 filter
De Sitter vacua from N=2 gauged supergravity
Klaus Behrndt, Swapna Mahapatra
Typical de Sitter (dS) vacua of gauged supergravity correspond to saddle points of the potential and often the unstable mode runs into a singularity. We explore the possibility to…
Supersymmetric Intersecting D6-branes and Fluxes in Massive Type IIA String Theory
Klaus Behrndt, Mirjam Cvetic
We study N=1 supersymmetric four-dimensional solutions of massive Type IIA supergravity with intersecting D6-branes in the presence NS-NS three-form fluxes. We derive N=1 supersymm…
Time-dependent backgrounds from supergravity with gauged non-compact R-symmetry
Klaus Behrndt, Mirjam Cvetic
We obtain a general class of time-dependent, asymptotically de Sitter backgrounds which solve the first order bosonic equations that extremize the action for supergravity with gaug…
Intersecting branes from 7-manifolds with G_2 holonomy
Klaus Behrndt
In this talk I discuss intersecting brane configurations coming from explicit metrics with G_2 holonomy. An example of a 7-manifold which representing a R^3 bundle over a self-dual…