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hep-th2001
All minimal supergravity extensions of 2d dilaton theories
W. Kummer, M. Ertl, T. Strobl
The formulation of 2d-dilaton theories, like spherically reduced Einstein gravity, is greatly facilitated in a formulation as a first order theory with nonvanishing bosonic torsion…
hep-th2000
Open strings, Born--Infeld action and the heat kernel
W. Kummer, D. V. Vassilevich
In the derivation of the Born-Infeld action for the case with a nontrivial boundary of the string world sheet the appearance of a new term changes the conformal anomaly. This may h…