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gr-qc2001
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…
gr-qc2001
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…