Creation of a time-machine in (2+1)-dimensional gravity

Details Creation of a time-machine in (2+1)-dimensional gravity Creation of a time-machine in (2+1)-dimensional gravity

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gregr..24.1131s&link_type=abstract

General Relativity and Gravitation, Volume 24, Issue 11, pp.1131-1141

Physics

5

Scientific paper

A non-stationary model of two concentric counter-rotating layers is constructed in (2+1)-dimensional Einstein theory. It is shown that the model which satisfies both the weak and the dominant energy conditions, may evolve from a state with no closed time-like curves to a state where such curves are present in a finite region of space. No singularities are formed in the process.

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