174 citations · 298 across the 4 of their papers we have counts for
4 papers
Fixed points of quantum gravity in higher dimensions
Peter Fischer, Daniel F. Litim
We study quantum gravity in more than four dimensions by means of an exact functional flow. A non-trivial ultraviolet fixed point is found in the Einstein-Hilbert theory. It is sho…
Fixed points of quantum gravity in extra dimensions
Peter Fischer, Daniel F. Litim
We study quantum gravity in more than four dimensions with renormalisation group methods. We find a non-trivial ultraviolet fixed point in the Einstein-Hilbert action. The fixed po…
Space/time noncommutative field theories and causality
H. Bozkaya, P. Fischer, H. Grosse +4
As argued previously, amplitudes of quantum field theories on noncommutative space and time cannot be computed using naive path integral Feynman rules. One of the proposals is to u…
S-matrix for s-wave gravitational scattering
P. Fischer, D. Grumiller, W. Kummer +1
In the s-wave approximation the 4D Einstein gravity with scalar fields can be reduced to an effective 2D dilaton gravity coupled nonminimally to the matter fields. We study the lea…