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gr-qc2026
A rigid spherical shell enclosing a degenerate wormhole
Juri Dimaschko
A static configuration consisting of a rigid spherical shell enclosing a degenerate Schwarzschild Klinkhamer wormhole is investigated in general relativity. The shell is analyzed u…
gr-qc2026
Degenerate Geometries as Matter-Free Physical Configurations in General Relativity: Three Examples
Juri Dimaschko
We examine three degenerate spacetime configurations with wormhole topology, obtained via branching coordinate transformations of the Rindler, Minkowski, and Schwarzschild vacuum m…
gr-qc2025
Topological dressing method for the Einstein-Maxwell equations
Juri Dimaschko
A regular method is proposed that makes it possible to obtain a new exact solution with a wormhole from any topologically trivial exact solution of the Einstein-Maxwell equations i…