41 citations · 203 across the 40 of their papers we have counts for
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astro-ph.GA2009★ 1 cited
Exact gravitational lensing and rotation curve
Gunter Scharf, Gerhard Braunlich
Based on the geodesic equation in a static spherically symmetric metric we discuss the rotation curve and gravitational lensing. The rotation curve determines one function in the m…
hep-th2009★ 10 cited
Regularization in quantum field theory from the causal point of view
Andreas Aste, Cyrill von Arx, Gunter Scharf
The causal approach to perturbative quantum field theory is presented in detail, which goes back to a seminal work by Henri Epstein and Vladimir Jurko Glaser in 1973. Causal pertur…
gr-qc2009
From massive gravity to dark matter density II
G. Scharf
As previously observed the massless limit of massive gravity leads to a modification of general relativity. Here we study spherically symmetric solutions of the modified field equa…