6 citations · 6 across the 2 of their papers we have counts for
2 papers
gr-qc2024
Polar magnetic fields in black-hole space-times
Richard Kerner, Gideon Koekoek, Julia Schuring +1
To model magnetic fields of compact objects we solve the Maxwell equations in the background of the exterior static Schwarzschild and slowly rotating Kerr space-times. We impose th…
hep-th2013★ 6 cited
Time-reparametrization invariance and Hamilton-Jacobi approach to the cosmological sigma-model
Jan-Willem van Holten, Richard Kerner
The construction of physical models with local time-reparametrization invariance is reviewed. Negative-energy contributions to the hamiltonian are shown to be crucial for the reali…