4 papers · 1 filter
D-branes and boundary states in closed string theories
Ben Craps
In this Ph.D. thesis, we study some aspects of strings and branes. We mainly focus on anomalous D-brane couplings and on non-supersymmetric branes. In Chapter 2, we illustrate thre…
Anomalous couplings of type 0 D-branes
Marco Billo', Ben Craps, Frederik Roose
Closed type 0 string theories and their D-branes are introduced. The full Wess-Zumino action of these D-branes is derived. The analogy with type II is emphasized throughout the arg…
Anomalous couplings of non-BPS D-branes
Marco Billo', Ben Craps, Frederik Roose
Non-BPS type II D-branes couple to R-R potentials via an action that, upon tachyon condensation, gives rise to the Wess-Zumino action of BPS D-branes.
The Definitions of Special Geometry
Ben Craps, Frederik Roose, Walter Troost +1
The scalars in vector multiplets of N=2 supersymmetric theories in 4 dimensions exhibit `special Kaehler geometry', related to duality symmetries, due to their coupling to the vect…