57 citations · 144 across the 12 of their papers we have counts for
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physics.hist-ph2005★ 6 cited
On the discovery of Birkhoff's theorem
Nils Voje Johansen, Finn Ravndal
Birkhoff showed in 1923 that the Schwarzschild solution for the metric from a point particle was also valid in the a priori non-static case as long as the spherical symmetry was ma…
quant-ph2005
Black-body radiation in extra dimensions
H. Alnes, F. Ravndal, I. K. Wehus
The general form of the Stefan-Boltzmann law for the energy density of black-body radiation is generalized to a spacetime with extra dimensions using standard kinetic and thermodyn…