3 papers
hep-th1997
Gauging the Central Charge
N. Dragon, U. Theis
We gauge the central charge of the N=2 supersymmetry algebra in rigid superspace. The Fayet Sohnius hypermultiplet with gauged central charge coincides on-shell with N=2 supersymme…
hep-th1997
Supergravity with a Noninvertible Vierbein
N. Dragon, H. Guenther, U. Theis
We show that there is no off-shell Palatini formulation of minimal supergravity. Nonetheless, we have been able to generalize the multiplet and Lagrangians of this theory to the ca…
hep-th1996
BRS Symmetry and Cohomology
Norbert Dragon
The BRS symmetry determines physical states, Lagrange densities and candidate anomalies. It renders gauge fixing unobservable in physical states and is required if negative norm st…