Lorentz cobordism. II
It is shown that ‘changes of topology’ (of spacelike sections) in the spacetime of classical general relativity are consistent with the following requirements: (i) stable causality, (ii) future causal geodesic completeness, and (iii) finite, positive energy density. This amounts to showing that the framework of classical general relativity encompasses ‘changes of topology’.
KeywordsNull Geodesic Timelike Curve Solid Torus Closed Timelike Curve Classical General Relativity
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