6 papers
Non-Compact Compactifications with Brane Worlds
A. Kehagias
The possibility of neutral, brane-like solutions in a higher dimensional setting is discussed. In particular, we describe a supersymmetric solution in six dimensions which can be i…
On the Ground State of the Supersymmetric Five-brane
Alexandros Kehagias
We examine if there exists a zero-energy supersymmetric ground state for the fundamental five-brane. Looking for an - invariant ground state, we construct, in th…
T-duality for open strings with respect to non-abelian isometries
Stefan Forste, Alexandros A. Kehagias, Stefan Schwager
We gauge the non-abelian isometries of a sigma model with boundaries. Forcing the field strength of the gauge fields to vanish renders the gauged model equivalent to the ungauged o…
Zero-branes in 2+1 dimensions
S. Forste, A. Kehagias
We discuss zero-brane solutions in three-dimensional Minkowski space-time annihilated by half of the supersymmetries. The other half of the supersymmetries which should generate th…
A canonical approach to S-duality in Abelian gauge theory
A. A. Kehagias
We examine the electric-magnetic duality for a U(1) gauge theory on a general 4-manifold. The partition function for such a theory transforms as a modular form of specific weight.…
All WZW Mooels in
A. A. Kehagias
We present here all the real algebras with dim5 and all 6-dimensional nilpotent ones with symmetric, invariant and non-degenerate metrics for which a WZW mo…