1 citations · 1 across the 2 of their papers we have counts for
5 papers
The onefold truth
Rainer Burghardt
Some features of the Schwarzschild and Kruskal metric are being discussed under the assumption that the Schwarzschild model can be explained geometrically.
Freely falling observers
Rainer Burghardt
We show that the field equations of the Schwarzschild geometry are invariant under passive Lorentz transformations to a freely falling system. We decompose the field equations with…
New embedding of Schwarzschild geometry. II. Interior solution
R. Burghardt
We embed the Schwarzschild interior solution in a five-dimensional flat space and show that the systems of the interior and the exterior solution are based on the same geometrical…
New embedding of Schwarzschild geometry. I. Exterior solution
Rainer Burghardt
We propose a global minimal embedding of the Schwarzschild theory in a five-dimensional flat space by using two surfaces. Covariant field equations are deduced for the gravitationa…
Constructing the Goedel universe
R. Burghardt
By a suitable transformation, we derive the rotating Goedel universe from a static one and we show, how rotation may be implemented geometrically. The rotation law turns out to be…