Kolloquium des Graduiertenkollegs 1493
Urs Schreiber, Universitaet Nijmegen
"Obstruction theory for parameterized WZW terms"
I present results on the obstructions to extending a higher WZW term (higher gerbe with connection) on a model space G/H to a global WZW term on G/H-bundles and G/H-Cartan geometries. Examples include metaplectic pre-quantization, the heterotic Green-Schwarz anomaly and classical anomalies of p-brane sigma models on curved superspacetimes.