3 citations · 3 across the 1 of their papers we have counts for
7 papers
How to approach Quantum Gravity - Background independence in 1+1 dimensions
D. Grumiller, W. Kummer
The application of quantum theory to gravity is beset with many technical and conceptual problems. After a short tour d'horizon of recent attempts to master those problems by the i…
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…
2d quantum gravity with torsion, dilaton theory and black hole formation
Wolfgang Kummer
Starting from the work of the author in 1990 with different collaborators, essential progress in 2d gravity theories has been made. Now all such theories (and not only certain spec…
Hawking radiation and Hawking flux from spherical reduction
W. Kummer, D. V. Vassilevich
Using heat kernel techniques we show that the relation between Hawking temperature and radiation flux known from Einstein gravity in D dimensions can be reproduced from the spheric…
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…
Exact Path Integral Quantization of 2-D Dilaton Gravity
W. Kummer, H. Liebl, D. V. Vassilevich
We demonstrate that in the absence of `matter' fields to all orders of perturbation theory and for all 2D dilaton theories the quantum effective action coincides with the classical…